What is tinea favosa characterized by on the scalp?

Tinea favosa, a fungal infection of the scalp, is specifically characterized by the presence of dry, sulfur-yellow crusts known as scutula. These scutula are a significant symptom of the disease and can be mistaken for other scalp conditions due to their appearance. Patients might also experience hair loss in affected areas as a result of the inflammation and irritation caused by the fungus.

The formation of these cup-like crusts, which can emit a foul odor, is a key identifier of tinea favosa, distinguishing it from other scalp conditions such as seborrheic dermatitis or psoriasis that typically have different manifestations. Understanding this unique symptom helps in effectively diagnosing and treating the condition, as well as distinguishing it from other types of tinea or dermatological issues.