# Scutulum

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For the star Scutulum, see [Iota Carinae](/source/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](/source/Favus).[1]

## Morphology

- Consists of a [crust](/source/Crust_(dermatology))-like yellow lesion (sulphur cap)

- Has a concave-convex surface with its convexity to the [scalp](/source/Scalp) making for itself an [erosion](/source/Erosion) or depression of [epidermis](/source/Epidermis_(skin)), 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

1. **[^](#cite_ref-1)** Dawber, Rodney P. R. (1997). *Diseases of the hair and scalp*. Wiley-Blackwell. p. 427. [ISBN](/source/ISBN_(identifier)) [978-0-86542-866-9](https://en.wikipedia.org/wiki/Special:BookSources/978-0-86542-866-9).

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