Kshudra Roga in the Sushruta Samhita: Indralupta, Darunaka, Palita and Vyanga - the Hair, Face and Foot Portraits of Nidana Sthana 13

📖 24 min read · Part of our classical-text series on the Sushruta Samhita

Every medical library has a chapter like this one. After the great subjects have been given their own volumes — the fevers, the swellings, the wasting illnesses, the eye — something is always left over. A crack in a heel. A scalp that itches. Hair going grey at thirty. A brown mark on a cheek that was not there last winter. Small things. Nobody writes a treatise on them.

Sushruta wrote a chapter on them, and it is one of the most quietly revealing in the whole compendium. The thirteenth chapter of the Nidana Sthana is titled for the Kshudra Roga, and kshudra means small, minor, slight — the residue. Forty-four entries, most a sentence or two long, filed with the same care the text gives to conditions that could kill you.

Our first instalment covered the opening census — the list of forty-four, the commentators’ disagreements about how to count them, and the first seventeen portraits, ending with Chippa and Kunakha at the nail-fold, Anushayi and Vidarika. Today we read the remainder, verses 20 to 45, and something changes: the entries stop being obscure and start being familiar. This is the half of the chapter about hair, scalp, face, feet and skin — the half any reader in any century has looked in a mirror and recognised.

One promise before we begin, as always in this series: everything below is textual scholarship. The verses name conditions with the confidence of their own era; we quote and explain them as history. Nothing here is medical advice, and nothing we sell is a treatment for anything at all.

Where Today’s Verses Sit: the Second Half of the Kshudra Roga Census

The chapter opens (XIII.1) by naming its forty-four subjects in a single dense census, then works through them in order; verses 2 to 19, Part One’s territory, move across the body’s swellings, eruptions and nail-fold troubles. At verse 20 the text turns almost entirely to what the tradition calls the bahya rogamarga, the outer path of disease: skin, hair, nails, the surfaces. It finishes the family of knots inherited from the previous chapters, drops to the feet, rises to the scalp, settles on the face, catalogues the marks that sit on skin rather than in it — and then, in its last four entries, arrives somewhere unexpected: at children, at bathing, and at the consequences of holding something back.

The Source: Sushruta Samhita, Nidana Sthana, Chapter XIII

The Nidana Sthana is the compendium’s book of definition and distinction — it names and separates; it does not prescribe.

The Sushruta Samhita is organised into six sthanas, and the second — the Nidana Sthana, in sixteen chapters — is the book of causes and signs. Its job is diagnostic, and only diagnostic: what a thing is, which doshas the tradition holds responsible, where it sits, what it looks and feels like, and how to tell it apart from the entry beside it. What to do about any of it belongs to a different book entirely, the Chikitsa Sthana.

That structural fact is worth holding on to for the whole of this article. A Nidana chapter is a chapter of names and distinctions; reading one as a manual of what to apply to your scalp is a category error. What it offers instead is rarer: a first-millennium physician’s eye, moving across the small troubles of ordinary bodies and describing exactly what he sees.

Our translation throughout is Kaviraj Kunja Lal Bhishagratna’s English Sushruta (Calcutta, 1907–1916), still the most widely cited complete English rendering. His margins carry a second layer of history — an Edwardian doctor reaching for the vocabulary of 1911 to gloss a term from a millennium and a half earlier — and where his glosses belong to his era rather than to the text, we set them aside and stay with the Sanskrit. He also preserves the commentators Dallana and Bhoja.

Sharkararbuda: Gravel Inside a Granthi (XIII.20–21)

The chapter picks up by finishing a family of lumps our eleventh-chapter reading covered in full — the granthi, the apachi, the arbuda, the galaganda.

In Sharkararbuda, deranged Vayu and Kapha take hold of the mamsa (flesh), the sira (vessels), the snayu (ligaments) and the medas (fat), and raise a granthi — a knot. When that knot opens, the text says, it gives out a copious secretion resembling honey, clarified butter, or vasa, the fat of muscle. Then comes the part that earns the name: the same Vayu, further aggravated by all that discharge, dries what remains and gathers the flesh up again into a great many gravel-like concretions — sharkara, grit. A knot that has become a bag of gravel. Sushruta adds that a foul secretion of varied colour comes from the sira in these growths, and that they sometimes bleed without warning.

Verse 21 then does something the modern reader should notice. Three skin conditions — Pama, Vicharchika and Rakasa — are named only to be dismissed, because they have already been dealt with under Kushtha, in the fifth chapter of this same Nidana Sthana. We covered that chapter in Sushruta’s eighteen-fold skin classification, and Charaka’s parallel treatment in his own Kushtha chapter.

And there, in one administrative sentence, is the definition of kshudra. This chapter is not a category of illness but a filing decision — what remains once the volumes with their own chapters have claimed their subjects, the drawer at the end of the cabinet marked everything else. Which is precisely why it is such an unguarded window onto ordinary first-millennium life.

Padadarika: The Cracked Sole of the Person Who Walks Too Much (XIII.22)

Wooden khadau and a dish of tila taila: the two objects standing between a first-millennium foot and this entry.

Here is the whole entry — one of the most human sentences in the Nidana Sthana:

Pada is foot. Dari is a cleft, a fissure — the same word used for a cleft in the earth or in rock. Padadarika is quite literally the little cleaving of the foot, and the description of how it happens has not needed a single correction in fifteen hundred years: a great deal of walking, on ground that takes the oil out of skin, until the surface loses the moisture that kept it pliant, and splits.

The aetiology’s shape is what strikes you. Sushruta reaches for nothing exotic — no invisible agent, no imbalance descending from elsewhere, just a person who walks a very great deal, ground that dries the sole, and the local Vayu aggravated exactly where the drying happened. In the tradition’s own terms this is Vayu behaving as Vayu is defined to behave: ruksha (dry), khara (rough), laghu (light) — internally consistent, and landing on an answer any farmer would have given.

Set the entry against the daily-routine literature and it reads differently again. Pada abhyanga — oiling the feet, usually last thing at night, usually with sesame — is not an indulgence in the classical dinacharya but a fixed item in the day, and the oils chapter of the Ashtanga Hridaya puts tila taila at the head of the shelf for exactly the quality this entry is missing: snigdha, unctuous. Sushruta is describing a foot from which that daily unction has been absent. He never says so. He does not have to; his reader oiled their feet every night and knew. Our abhyanga guide walks through the practice as the texts describe it, feet included.

Kadara and Alasa: A Thorn’s Long Memory, and the Mire Between the Toes (XIII.23–25)

Two more foot entries follow, both records of a barefoot civilisation.

Kadara is a knotty growth — the text calls it a granthi — painful, hard, raised at the middle or sunk at the sides, giving off a secretion, and shaped, Sushruta says, like kola, the Indian plum. It appears on the soles, from vitiated local blood and fat under deranged doshas, and the trigger is named with beautiful specificity: incidental to the pricking of a thorn, or of gravel.

A thorn goes into a sole. Weeks or months later, at that spot, a hard painful knot. The text connects an injury to an outcome across a gap of time, in a single clause, and files it — an observation made by someone who had asked a lot of patients the same question: had you stepped on anything? Bhishagratna preserves a footnote worth pausing on: Bhoja reads palms, not soles. One commentator put this entry on the hand rather than the foot, and the reading was thought important enough to carry down the centuries beside the received text rather than be quietly corrected away.

Alasa follows, and it is the entry that most firmly dates the chapter to a world of bare feet and monsoon ground. It is caused, the text says, by contact with poisonous mire, appears between the toes, and is marked by pain, burning, itching and exudation. The web of the toes is where water sits longest, dries last, and is washed least. Sushruta places the entry there and nowhere else.

Indralupta, Rujya, Khalitya: Sushruta on the Losing of Hair (XIII.26)

A carved comb, dried amalaki and a bhringraj sprig: the everyday objects that sat around this chapter’s scalp entries.

The chapter arrives at the head, and its first entry there is given three names in one line — Indralupta, Rujya, Khalitya — which usually signals a subject the tradition had discussed from more than one direction. The mechanism has two stages, and the second is the clever one:

Stage one: Vayu and Pitta reach the keshamula, the hair roots, and the hairs go. Stage two: rakta (blood) and Kapha, deranged in that same locality, occupy the emptied pores — and because the pores are occupied, nothing comes back.

Look at what that second clause is doing. The text is not content to describe a loss; it answers a shrewder question: why does it stay lost? Its answer is structural rather than vague — the site is blocked, the opening filled, the ground no longer free. Whatever one makes of the humoral machinery, the shape of the reasoning is a physician’s: two processes, in sequence, at one site, explaining both the event and its persistence.

Darunaka and Arunshika: The Hard, Dry Scalp and the Many-Mouthed Sore (XIII.27–28)

Two scalp entries follow, and the pair works as a contrast: one dry, one weeping.

Darunaka is defined in a single clause: the hairy parts of the body become hard and dry, with an itching sensation, from the action of deranged Kapha and Vayu. The name comes from daruna, meaning hard, harsh, rough — the same word used of hard-hearted people and harsh speech. It is a texture word applied to a scalp, and it is the whole diagnosis. Three qualities and two doshas, and the entry is complete and distinguishable from everything around it.

Arunshika is its opposite in every respect. These are arunshi, sores, on the scalps of men, giving off a thick discharge and — here is the phrase that stops you — furnished with a number of mouths or outlets. Sushruta is describing topology: not one opening but many, connected beneath. Anyone who has read the compendium’s surgical sections will recognise the author of that sentence — a man who thinks about what a sore is shaped like underneath the surface, because he expects to have to deal with it there.

The cause he assigns is the striking part. Alongside deranged rakta and Kapha of the locality he names krimi — the minute living creatures the Samhitas repeatedly list among causes of disease, in a tradition that had no way of seeing them and named them anyway. That is not a claim the ancients knew what we know; they did not, and their own commentators argued endlessly over what krimi even referred to. But the willingness to posit a living cause, in a text otherwise committed to explaining everything through three doshas, is a genuinely interesting piece of intellectual history.

Palita: Overwork, Fatigue, Grief and Anger Turn the Hair Grey (XIII.29)

The hour the text blames: overwork, fatigue, grief and anger, and heat travelling upward to the head.

If you read only one verse from this chapter, read this one.

Four causes are named. Shrama, hard exertion. Klama, the flat exhaustion that does not lift with rest. Shoka, grief. Krodha, anger. Three of the four are states of mind, sitting in a diagnostic manual as the assigned aetiology of a visible physical change.

And the mechanism is not hand-waved. Bodily heat and Pitta are described as having recourse to the region of the head — moving upward, arriving at the shiras, acting on the hair there. Whether or not one accepts the physiology, notice the commitment: Sushruta is not saying grief is bad for you in a general, moralising way. He is naming a route, a destination and an effect.

Then comes the clause that shows the whole tradition’s sophistication in six words: before the natural period of senile decay. Grey hair in its own season is jara — ageing — which classical Ayurveda files under svabhava-bala-pravritta, the processes arising from nature’s own strength, which are not diseases at all. Ageing is not a disorder to be fought. Ageing early, out of its season, is an entry in the Nidana Sthana. That distinction is drawn with a precision a great deal of modern wellness writing never manages.

Palita also belongs to a wider argument running through the whole classical corpus. Charaka’s three causes of disease place prajnaparadha — the failure of judgement — at the head of the list, ahead of season and ahead of the senses; and the Achara Rasayana chapter makes the same case from the other side, listing twenty-four conduct virtues and stating plainly that a person who lives that way obtains the results of a rasayana without taking a single herb. Charaka argues that conduct changes the body. Sushruta files a case where, in his reading, it visibly has.

Yauvana Pidaka and Mukhadushika: The Salmali Thorn on a Young Face (XIII.31)

The chapter reaches the face, and its first entry there is one every generation recognises:

The simile is the entry. Salmali is the silk-cotton tree, Bombax ceiba — the semal, whose flame-red flowers open on bare branches at the end of winter across most of India. A young semal trunk is covered in hard, conical, broad-based prickles scattered evenly across a smooth grey-green surface. Sushruta chose it because every one of his readers would have that picture: firm little raised cones, on an otherwise even surface, distributed rather than clustered.

The two names sit at different angles to the subject. Yauvana Pidaka is temporal — the eruption of yauvana, of youth — and locates the entry in a life stage rather than in a pathology. Mukhadushika is blunter: mukha is face, dushika is the spoiler, the one that ruins. The face-spoiler.

That second name carries something the clinical description does not. Sushruta has recorded not only what the condition looks like but what it costs its subject — about young people, on their faces, in a compendium otherwise concerned with things that maim and kill.

Vyanga: The Thin Brown Patches Wrath Leaves Behind (XIII.38)

A few verses later the face returns, and so does the emotional register:

Set this beside Palita and the pattern is unmistakable. The two entries concerning the visible head and face — the greying and the brown marks — both name krodha, anger, and both name excessive exertion. Everything else in the run is assigned to doshas, to krimi, to mire, to thorns, to a neglected wash. These two are assigned to a state of mind and a body pushed too hard. In Sushruta’s causal ledger, the face is where the inner weather shows.

The description is a masterclass in compression. Four adjectives: tanu (thin), vritta (circular), nirujam (painless), shyava (dusky brown) — and the third does the most work. Painless is how you separate this entry from half the chapter: Kadara is painful, Alasa burns, Arunshika discharges, Yauvana Pidaka is raised. Vyanga is flat, brown, round and does nothing. Sushruta is teaching differential diagnosis by listing the negative finding, which is exactly what a good clinical teacher does.

Bhishagratna adds a dissenting footnote: according to certain authorities it is due to the absorption of blood by Vayu and Pitta. A second school, a different mechanism, printed alongside — the second commentator disagreement in a dozen verses.

The framework also has a natural home for a face entry like this one: Bhrajaka Pitta, one of the five divisions of Pitta, seated in the skin and held responsible for its colour and lustre — which is what a verse about Pitta arriving at the face implicitly invokes.

Masaka, Tilakalaka, Nyaccha, Yatumani: A Skin Atlas Written From the Pantry (XIII.33–37)

The chapter’s measuring sticks, in four dishes: tila, masha, masura and kola.

Now the chapter does something quietly extraordinary: across five short verses it builds a working atlas of the marks that sit on skin, measuring every one in units from the kitchen.

Yatumani (XIII.33): reddish, glossy, circular, painless, sahaja — congenital — and not raised above the surrounding skin. From deranged rakta and Pitta. Moles, present from birth.

Masaka (XIII.34): hard, painless, black, and raised, resembling the masha pulse — the black gram — in shape. From aggravated Vayu.

Tilakalaka (XIII.35): black, painless spots about the size of a tila, a sesame seed, and level with the skin. From all three doshas together.

Nyaccha (XIII.36): congenital, painless, circular patches, white or shyava (dusky brown), sometimes confined to a small area and sometimes more diffused.

Charmakila (XIII.37): charma is skin, kila is a peg or a nail — a skin-peg. The text does not describe it again here, because it has already done so under the Arsha section of the Nidana Sthana, and simply says so.

Read as a group, three diagnostic axes emerge, and the text applies them consistently to every entry:

Colour, elevation, pain — and then, where a word alone will not carry the shape, a seed or a fruit from the shelf behind the reader. There is a good reason the calibration came from the pantry. A manuscript copied by hand and carried across a subcontinent cannot include an illustration or assume a shared instrument. What it can assume is that every household from Taxila to Tamilakam has sesame, black gram, lentils and jujubes within arm’s reach. Measure by those and your text is legible everywhere, forever, at no cost. Readers of our Charaka Kalpa Sthana instalment will recognise the instinct exactly: there, the whole ladder of classical weights is built upward from seeds — a peppercorn, a mustard seed, a rice grain, a barley corn — each rung defined as a number of the rung below. It is a habit English shares: the carat is the carob seed, the grain a grain of barley. When there is nothing else to measure by, measure by what grows.

Masurika and Padmini Kantaka: The Lentil and the Lotus Stalk (XIII.30, 32)

Two more entries continue the habit, drawn this time from the lentil bowl and the pond.

Masurika (XIII.30) sits slightly apart from everything around it: yellow or copper-coloured eruptions, attended by pain, burning and jwara (fever), appearing all over the body, on the face and inside the mouth. The name is from masura, the red lentil — again a size, again from the kitchen. Unlike its neighbours, this entry names a fever and a whole-body distribution, and the later literature would devote entire specialist treatises to it. Here it gets two lines, in the drawer marked minor — which tells you something about how filing systems age.

Padmini Kantaka (XIII.32) is the loveliest name in the chapter. Padmini is the lotus plant; kantaka is a thorn. The entry describes circular greyish patches or rash-like eruptions studded over with thorny papillae of the skin, resembling the prickles on a lotus stalk, marked by itching, from deranged Vayu and Kapha. Pull a lotus stalk out of a pond and run a thumb along it and the image resolves at once: a smooth cylinder covered in small, close, fine prickles. Sushruta needed a reader anywhere in India to feel a particular skin texture through a manuscript, and he reached for the plant everyone had touched.

Ahiputana and Vrishana Kachchu: The Chapter’s Real Subject Is Washing (XIII.43–44)

The daily wash: in this chapter’s causal ledger, the difference between a body and an entry.

Near the end of the chapter come two entries that, read together, change the meaning of everything before them.

Ahiputana (XIII.43) is an itch-like eruption appearing about the anus of a child — and the cause Sushruta gives is not a dosha, a season or a constitution. It is a deposit of urine, perspiration and faeces, arising, in his words, from the neglect in cleansing that part. The eruptions, from deranged rakta and Kapha, soon take on a weeping character and give off a discharge because the child scratches; the vrana — the sore — then spreads, runs together, and, the text says with visible feeling, proves very obstinate in the end. That is nappy-area soreness, described in a Sanskrit surgical compendium, with the cause identified exactly and the escalation laid out in order.

Vrishana Kachchu (XIII.44) makes the same point about adults, bluntly. The entry concerns a fold of skin a daily bath reaches and neglect does not, and Sushruta names the lapse without softening: filthy matter deposited on the skin of a person negligent in washing, or in the habit of daily ablutions; the local perspiration moistens it; an itching begins; constant scratching does the rest, under aggravated Kapha and blood.

Now read the whole chapter’s causes as a single column:

That is the chapter’s argument, and it is never stated outright. Sushruta files forty-four small entries one after another and lets the aetiology column say it: these are the conditions of a body whose daily care has lapsed.

Which reframes what snana and abhyanga are doing in the classical dinacharya. In the daily-routine chapters, bathing and oiling read as ritual — pleasant, prescribed, faintly ceremonial. Here, in the diagnostic book, we see the same practices from the other side: as the specific absence that produces specific entries.

And there is a real humility in where the chapter ends up. The compendium that gives us rhinoplasty, cataract couching and a hundred and twenty-one surgical instruments closes its minor-ailments run at a child’s unwashed skin and an adult’s skipped bath. The most sophisticated surgical text of the ancient world, telling you to wash.

Niruddha Guda: The One Entry Caused by Holding Back (XIII.42)

Just before those two comes the odd one out, and instructively so. Every other cause in this chapter is something that happened to a body or was left undone for it. This one is an action — specifically, an act of restraint.

The dosha is named with precision: not Vayu in general but Apana Vayu, the downward-moving division seated below the navel, governing what leaves the body. Obstruct its direction habitually, the text argues, and the passage itself narrows in consequence.

This is the Nidana Sthana putting a specific structural price on a rule the tradition states elsewhere as conduct. The vega-dharana doctrine — the classical prohibition on suppressing the natural urges — is among the most consistently repeated instructions in Ayurveda; Vagbhata devotes a chapter of the Ashtanga Hridaya’s Sutrasthana to the thirteen urges that should never be held back, and we read the full doctrine in our Vega Dharana guide. What Sushruta adds is the invoice: not this is unwise, but this is the entry it becomes, this is the dosha involved, this is the direction of the fault, and this one is difficult. The chapter closes shortly after with Guda Bhramsha — a prolapse occurring in a weak and lean patient under straining — and then stops.

How the Chapter Ends — and What the Manuscript Does Next

The colophon is brief: so ends the thirteenth chapter of the Nidana Sthana, concerning the diagnosis of the minor ailments. Forty-four entries, closed.

What follows is worth noting for what it says about the compiler’s sense of order. Chapter XIV opens immediately on Shukadosha — a chapter of injuries, eighteen of them, all produced by one cosmetic malpractice the text opens by calling foolish outright. It involved caustic preparations made from shuka, a stinging insect, applied — as Sushruta pointedly puts it — not in the usual officinal way. He names all eighteen resulting conditions and rules four beyond the help of his era’s medicine. That chapter’s clinical substance belongs to the medical literature and we leave it there, but two things about it are worth carrying away.

The first is the naming, which continues today’s habit without a pause: Sarshapika from sarshapa, the mustard seed; Ashthilika from ashthila, a small hard stone; Kumbhika from the jambolan seed it resembles. Even in a chapter about damage, the measuring sticks come from the shelf and the orchard. And Tilakalaka appears again as one of the eighteen — the same word, in the very next chapter, attached to something else entirely.

The second is the placement. Sushruta has just spent a chapter documenting what small neglects do to a body over time, and follows it immediately with a chapter on what a cosmetic desire, pursued without knowledge, does to a body all at once. Whether the compiler intended the juxtaposition or the manuscript merely fell that way, the oldest surgical compendium in the world closing its minor-ailments run with a warning against vanity practised in ignorance is not the worst note for a modern reader to leave on.

Reading the Kshudra Roga Chapter with Modern Eyes

So what actually survives from these twenty-five verses, and what does not?

What holds up remarkably well is the observation. A person who walks a great deal on drying ground gets split soles. A thorn in a sole can produce a hard, painful lump long afterwards. The web between the toes is where wet ground does its damage. A scalp left unwashed develops sores. Marks on skin can be sorted usefully by colour, by whether they are raised, and by whether they hurt. None of that is mysticism. It is a physician looking carefully at a great many people and writing down what recurred.

What does not survive is the machinery. Vayu drying the sole, Kapha sealing the pore, Pitta travelling upward to the head — these are the explanatory apparatus of a system built without microscopy or any way of seeing what was actually happening. It is internally consistent and often elegant, and it is not an account of mechanism anyone should treat as one today. The footnote about women and physical exercise belongs to the same category: a real pattern wrapped in an explanation of its era.

The most useful thing a modern reader can take from the chapter, though, is the structural point we started with. This is a Nidana chapter. Its entire job is to name and distinguish — this is Masaka and not Tilakalaka because one is raised and the other level; this is Vyanga and not Kadara because one is painless and the other hurts. It is a taxonomy, and it was never meant to be anything else. Anyone reading a first-millennium taxonomy as a guide to what to do about a mark on their own face has misunderstood the genre, and has a far better option: ask a qualified clinician.

What the chapter is genuinely good for is perspective — a window into how ordinary bodies lived in the first millennium, barefoot on monsoon ground, walking distances we would not, washing with water carried by hand, working past exhaustion, grieving, ageing. Sushruta wrote down the small marks that life left on those bodies with the same care he gave to the surgeries that made him famous. Fifteen centuries later, a reader can still open the chapter and find their own cracked heel in it.

What This Article Is Not

Daily Care in a Classical Spirit

Our own shelf keeps a much humbler ledger. These are everyday personal-care preparations made in the spirit of the tradition’s daily-care customs — a bath, an oil, a few drops at night — offered for what they are and never as more.

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