Scutulum

For the star Scutulum, see Iota Carinae.

A scutulum is a yellow, perifollicular, saucerlike or cup-shaped crust with a cheesy odor, composed of dense mats of mycelia and epithelial debris. Scutula often occur on the scalp and are characteristic of favus.^[1]

Morphology

Consists of a crust-like yellow lesion (sulphur cap)
Has a concave-convex surface with its convexity to the scalp making for itself an erosion or depression of epidermis, so it is firmly adherent to the scalp
Upon detachment it gives a serosangiunous discharge (serum and blood)
size : from a few millimetres to a few centimetres

References

↑ Dawber, Rodney P. R. (1997). Diseases of the hair and scalp. Wiley-Blackwell. p. 427. ISBN 978-0-86542-866-9.

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