A type of ringworm marked by dry, sulfur-yellow, cuplike crusts on the scalp is called

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Multiple Choice

A type of ringworm marked by dry, sulfur-yellow, cuplike crusts on the scalp is called

Explanation:
Dry, sulfur-yellow, cuplike crusts on the scalp are the classic sign of favus, a form of ringworm of the scalp. These crusts, called scutula, form cup-shaped structures around hair shafts and can lead to scarring and permanent hair loss if not treated. This pattern is distinct from broader tinea capitis, which may involve patchy hair loss without the characteristic cuplike crusts. Other fungal conditions, such as tinea versicolor, affect the trunk with pale or pigment changes, not crusty scalp lesions, and tinea nigra presents as dark patches on the palms. So, the description points to favus.

Dry, sulfur-yellow, cuplike crusts on the scalp are the classic sign of favus, a form of ringworm of the scalp. These crusts, called scutula, form cup-shaped structures around hair shafts and can lead to scarring and permanent hair loss if not treated. This pattern is distinct from broader tinea capitis, which may involve patchy hair loss without the characteristic cuplike crusts. Other fungal conditions, such as tinea versicolor, affect the trunk with pale or pigment changes, not crusty scalp lesions, and tinea nigra presents as dark patches on the palms. So, the description points to favus.

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