Lichen planus is an inflammatory skin condition that causes an itchy, non-infectious rash. It is characterized by small, flat-topped, purple or pink bumps that may be surrounded by white lines. The rash can appear anywhere on the body, but is most common on the wrists, ankles, and lower back. It can also affect the mouth, scalp, and nails. Treatment typically involves topical corticosteroids and antihistamines.

Common symptoms of Lichen Planus include:

-Raised, flat-topped, purplish-red bumps on the skin
-White streaks on the inside of the mouth
-Itchy, scaly patches on the scalp, arms, legs, or trunk
-Thin, shiny patches on the genitals
-Thickened, discolored nails
-Hair loss
-Painful sores in the mouth

The exact cause of lichen planus is unknown, but it is believed to be an autoimmune disorder. It is thought to be triggered by certain medications, infections, or other environmental factors. Other possible causes include allergies, stress, and exposure to certain chemicals.

1. Topical corticosteroids: These are the most commonly prescribed treatment for lichen planus. They are applied directly to the affected area and can help reduce inflammation and itching.

2. Oral corticosteroids: These are taken by mouth and can help reduce inflammation and itching.

3. Phototherapy: This involves exposing the affected area to ultraviolet light.

4. Immunosuppressants: These medications can help reduce inflammation and itching.

5. Antihistamines: These medications can help reduce itching.

6. Topical retinoids: These medications can help reduce inflammation and itching.

7. Oral retinoids: These medications can help reduce inflammation and itching.

8. Topical calcineurin inhibitors: These medications can help reduce inflammation and itching.

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1. Certain medications, such as beta-blockers, ACE inhibitors, and antimalarial drugs
2. Exposure to certain chemicals, such as hair dyes, perfumes, and preservatives
3. Infections, such as hepatitis C
4. Stress
5. Allergies
6. Genetics

Yes, there are treatments available for Lichen Planus. These include topical corticosteroids, topical calcineurin inhibitors, oral corticosteroids, and oral retinoids. Additionally, phototherapy, laser therapy, and immunosuppressants may be used in some cases.