Question

A disorder that refers to a chronic scalp condition with excess flaking, which accumulates on the scalp or falls on the shoulders is known as dandruff or:

a. scabies
b. pityriasis
c. tinea capitis
d. tinea favosa

Answer 1

Dandruff, a chronic scalp condition with excess flaking, is known as pityriasis. This should not be confused with scabies, tinea capitis, or tinea favosa which are different skin conditions.

Step-by-step explanation:

A disorder that refers to a chronic scalp condition with excess flaking, which accumulates on the scalp or falls on the shoulders is known as dandruff. The correct term from the options given is pityriasis (b). While dandruff is often associated with seborrheic dermatitis on the scalp, the term pityriasis is the scientific term used for the condition characterized by fine, powdery flakes. This is in contrast to some of the other conditions listed:

• Scabies is a skin infestation caused by a mite, leading to intense itching and red rashes.
• Tinea capitis, also known as scalp ringworm, is a fungal infection of the scalp that can lead to scaly, itchy patches and even hair loss.
• Tinea favosa or favus is a severe form of tinea capitis, characterized by scarring and loss of hair.