L66.11

Clinical Causes: Autoimmune response where the immune system mistakenly attacks hair follicles Genetic predisposition that increases susceptibility Environmental factors such as stress or exposure to certain chemicals Potential trigger from medications or viral infections Other inflammatory skin conditions that may coexist

Key Symptoms: Gradual development of patchy hair loss on the scalp, often in a symmetric pattern Redness or inflammation around hair follicles Presence of scalp scale, dryness, or flaky patches Hair breakage or thinning at the scalp margins Itching or a burning sensation in affected areas Possible scarring in areas of long-standing disease, leading to permanent hair loss

Diagnosis Path: Diagnosis is typically based on clinical examination and medical history. A dermatologist may perform a scalp biopsy to confirm the presence of characteristic histopathological features, such as lichenoid inflammation and follicular destruction. Trichoscopy, a specialized scalp examination, can also aid in identifying signs consistent with lichen planopilaris. Blood tests may be ordered to rule out other autoimmune or systemic conditions but are not diagnostic for this specific condition.

Treatment Protocols: Management strategies focus on reducing inflammation and preventing further hair loss. Common treatments include topical corticosteroids, which help suppress inflammation, and topical or systemic immunomodulatory agents. Additionally, medications like hydroquinone or doxycycline may be used to manage symptoms. Hair regrowth can sometimes be stimulated with medications such as minoxidil, but results vary. Early intervention is crucial to prevent scarring and permanent hair loss. Regular follow-up with a healthcare provider is recommended to monitor disease progression and adjust treatment as needed.