Skin
Lichen Planus
About Lichen Planus
Lichen planus is a chronic inflammatory condition that can affect the skin, hair, nails, and mucous membranes. It is characterized by small, flat-topped, purplish bumps that often itch.
Common Symptoms
- Itchy, purple, flat-topped bumps on the skin
- Lacy white patches in the mouth (oral lichen planus)
- Hair loss (lichen planopilaris)
- Nail changes, such as thinning or ridging
- Blisters or ulcers in severe cases
- Genital involvement, causing pain or itching
- Scaly patches, particularly on the lower legs
- Brownish discoloration as lesions heal
Diagnosis
Diagnosis of lichen planus typically involves a physical examination by a healthcare professional. A biopsy of affected skin or mucous membrane may be performed to confirm the diagnosis and rule out other conditions. In some cases, blood tests might be ordered to check for associated conditions.
Causes
The exact cause of lichen planus is not fully understood, but it is believed to be an autoimmune condition where the immune system mistakenly attacks skin or mucous membrane cells. Potential triggers or associations may include certain medications, viral infections (like hepatitis C), and stress.
Treatment Overview
Conventional treatments for lichen planus commonly aim to manage symptoms and reduce inflammation, and may include topical corticosteroids, oral steroids, or phototherapy. For extensive or severe cases, systemic medications might be considered; however, these carry potential side effects. Some individuals explore complementary approaches, such as dietary adjustments or stress reduction techniques, though their efficacy in treating lichen planus requires further scientific investigation.
Prognosis & Outlook
Lichen planus can be a chronic condition, with symptoms sometimes lasting for months or even years, and it may recur. Oral lichen planus, in particular, may persist for a long time. While there is no definitive cure, symptoms can often be managed with various treatments, and in some individuals, the condition may resolve on its own over time.
Types & Variants
Cutaneous Lichen Planus
The most common form, affecting the skin, typically on the wrists, ankles, and lower back.
Oral Lichen Planus
Affects the mucous membranes inside the mouth, appearing as lacy white patches or painful red sores.
Lichen Planopilaris
Affects hair follicles, primarily on the scalp, leading to inflammation, scarring, and permanent hair loss.
Lichen Planus of the Nails
Affects fingernails and toenails, causing thinning, ridging, splitting, and potential nail loss.
Inverse Lichen Planus
Develops in skin folds, such as the armpits, groin, and under the breasts.
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