scutulum
{{for|the star Scutulum|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.{{Cite book|title=Diseases of the hair and scalp |first=Rodney P. R. |last=Dawber |page= 427 |publisher=Wiley-Blackwell |year=1997 |isbn=978-0-86542-866-9}}
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