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.

[edit] Morphology

• Consists of a crust like lesion yellow in colour (sulpher cap)
• Has a concave-convex surface with its convexity to the scalp making for itself an erosion or depression of epidermis, so it's firmly adherent to scalp
• Upon detachment it gives a serosangiunous discharge (serous + blood discharge)
• size : from few mms to few cms

[edit] References

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