Tzaraat: Colors, Shades, and Signs

Baheret is the primary reference for the most intense white appearance. Its comparison to snow describes relative visual intensity, not a digital color value that can be reproduced reliably on a screen.

A learner should examine the entire appearance: intensity, border, internal variation, qualifying size, and any additional sign. Brightness by itself does not establish a ruling.

The older Sapachat study explains the term as a secondary or attached appearance: less intense than its primary white, yet still capable of joining the primary appearance within the Torah framework.

It may also describe what remains when a stronger appearance loses some of its whiteness. The central lesson is that “secondary” does not mean irrelevant; the Kohen must learn how each related shade belongs to its primary category.

Read the full Sapachat source note

Se’et is a primary named appearance, traditionally compared to white wool. It must be learned as its own category and together with its related sapachat.

The word “raised” does not require an actual raised surface. As throughout skin nega’im, the Torah directs the Kohen to the visual appearance presented to his trained eye.

This related shade is the practical lower boundary of the four qualifying white appearances. A weaker white falls into the discussion of bohak rather than the ordinary nega’im range.

The learner must therefore study not only the most dramatic white, but also the minimum qualifying intensity and the distinction immediately below it.

נתק

The scalp and beard category is not classified through the ordinary four white appearances. Baldness, location, hair type, and later spread have their own rules.

Bohak is too weak in whiteness to be a skin nega sign of tumah, even when it has a shine. Its importance lies in teaching the Kohen to recognize the boundary below the minimum qualifying white.

The earlier note also distinguishes two stages of hafakh kulo lavan: bohak may interrupt the complete-white condition before a declaration of taharah, while bohak appearing after the Kohen has already declared tahor does not by itself reverse that status.

If the appearance strengthens until it reaches the whiteness compared to an egg membrane, it enters the range that must be assessed as a possible nega.

Read the full Bohak source note

The older study describes adamdam as a qualifying white appearance carrying a reddish tone. The entire patch may appear uniformly reddish-white, or the white may contain red blotches or streaks.

Chazal compare the integrated tone to wine diluted with water or small drops of blood diluted in milk. The Kohen therefore does not isolate “red” from “white”; he studies the combined appearance and the underlying white category.

A photograph can demonstrate the idea of admixture, but lighting and camera processing can shift both red and white. Direct examination remains essential.

Read the full Adamdam source note

Michyah means an area of healthy, living-looking flesh situated within the broader nega. It is not simply any darker point or any apparent repigmentation.

The Kohen must determine whether the healthy area has the required size and placement and whether it is properly surrounded by the qualifying appearance. Scattered pigment, a broken border, and a defined central island are not automatically interchangeable.

The clinical image above is useful because it trains the learner to separate the healthy-colored interior area from the broader white and reddish-white regions.

The older note emphasizes two hairs rooted within the nega. In a younger person whose hair in that area is ordinarily dark, their transformation to white may be an immediate sign.

Age and the normal color of hair at that location matter. In an older person with widespread preexisting white hair, the Kohen must determine whether the hairs preceded the nega; areas that ordinarily remain dark require separate attention.

The note excludes other colors from the ordinary white-hair sign and distinguishes the scalp and beard categories, where netek follows different rules.

The sign may appear in any of the four qualifying white appearances and can become relevant even after an earlier declaration of taharah.

Read the full White Hair source note

Pisyon is expansion of the nega after the Kohen has established a baseline and placed the person into the required period of hesger. The later viewing asks whether the original appearance has extended beyond its earlier boundary.

The older note stresses continuity of observation: the seventh-day comparison is made against the appearance previously examined, traditionally by the Kohen who initiated the quarantine.

Spread can remain legally significant even after an earlier declaration of taharah. A later photograph, however, cannot prove pisyon unless the original dimensions, angle, scale, lighting, and Torah process were properly established.

Read the full Pisyon source note

Shchin: The older page treats shchin as a broad heat- or inflammation-related injury rather than one modern diagnosis. Once the active wound has healed sufficiently, a qualifying white or reddish-white appearance within it enters the Torah process described for shchin.

Michvah: A burn or scald caused by fire, boiling liquid, heated metal, or another burning source has its own adjacent section. The burn itself does not create tumah; it can become the location of a qualifying appearance and related signs.

The Kohen must identify the cause and stage of the underlying lesion before applying the correct rules. Ordinary skin, shchin, and michvah cannot be merged into one visual category.

The older research note presents netek as a bald patch of the scalp or beard not created by shaving or hair-pulling. A minimum size and the presence of qualifying fine golden hair may create an immediate sign.

According to the interpretation cited there, the bald area need not display one of the four ordinary white skin appearances. Hair color is assessed by netek’s own rules: white or red hair is not the same sign as fine golden hair, while qualifying dark hair can alter the determination.

Spread after quarantine is independently significant, and the Torah prohibits removing the qualifying golden hairs. The entire scalp or beard location must be understood before comparison to modern alopecia.

Alopecia areata may provide a modern visual reference, especially where finer and lighter hairs remain, but a medical diagnosis and a Torah category are not interchangeable.

Read the full Netek source note

The garment laws concern eligible wool, linen, and leather garments or vessels and use the color terms yerakrak and adamdam. These colors, materials, and procedures must not be inferred from the rules of human skin.

The Kohen first orders quarantine rather than issuing an immediate final ruling. On the later viewing, spread, persistence, laundering, removal of the affected portion, return of the appearance, and burning can each become relevant.

The older research also discusses material size, mixed fabrics, natural or dyed leather, and the technical laundering process. This is a separate discipline required of a Kohen who intends to know the broader field of nega’im.

Read the full garment nega’im source note