**Question:** Scarring alopecia is seen in:

**Core Concept:** Scarring alopecias are a group of hair disorders characterized by permanent hair loss due to damage or destruction of hair follicles.

**Why the Correct Answer is Right:** Lichen planopilaris (LPP) is a type of scarring alopecia that presents with peripheral band-like inflammation around hair follicles, leading to progressive fibrosis and eventually hair loss. It is a common cause of scarring alopecia, affecting both sexes equally, and is typically seen in middle-aged individuals.

**Why Each Wrong Option is Incorrect:**

A. Alopecia areata (AAT) is a type of non-scarring alopecia characterized by patchy hair loss due to immune-mediated destruction of hair follicles. AAT does not lead to permanent hair loss, making it an incorrect answer.

B. Androgenetic alopecia (AGA) is a non-scarring alopecia, characterized by تصغير (miniaturization) of hair follicles in response to genetic and hormonal factors. AGA does not result in scarring and permanent hair loss, making it an incorrect answer.

C. Trichotillomania is a psychiatric disorder characterized by recurrent hair pulling, leading to hair loss and broken hairs but does not result in scarring, making it an incorrect answer.

D. Tinea capitis is a fungal infection caused by dermatophytes, leading to inflammation and hair destruction. While it causes hair loss, it does not result in scarring, making it an incorrect answer.

**Clinical Pearl:** Scarring alopecias, like lichen planopilaris, should be suspected in patients presenting with progressive, irreversible hair loss, particularly those with a family history of similar presentations.

**Correct Answer:** Lichen planopilaris (LPP) is a common cause of scarring alopecia, particularly affecting middle-aged individuals. In LPP, the immune system attacks hair follicles, leading to peripheral band-like inflammation causing fibrosis and permanent hair loss.