Lichen simplex chronicus
Lichen simplex chronicus is a skin condition caused by chronic itching and scratching.
This disorder may occur in people who have:
- Skin allergies
- Eczema (atopic dermatitis)
- Nervousness, anxiety, depression, and other emotional problems
The problem is common in children, who cannot stop scratching insect bites and other itchy skin conditions. It also occurs in children who have chronic repetitive movements.
This skin disorder leads to scratching, which then causes more itching. It often follows this pattern:
- It may start when something rubs, irritates, or scratches the skin, such as clothing.
- The person begins to rub or scratch the itchy area. Constant scratching causes the skin to thicken.
- The thickened skin itches, and this leads to more scratching. This then causes more thickening of the skin.
- The skin may become leathery and brownish in the affected area.
- Itching of the skin that may be long-term (chronic), intense, and that increases with stress
- Leathery texture to skin
- Raw areas of skin
- Skin lesion, patch, or plaque with sharp borders and a leathery texture, located on the ankle, wrist, neck, rectum, anal area, forearms, thighs, lower leg, back of the knee, and inner elbow
Exams and Tests
Your health care provider will look at your skin and ask if you have had chronic itching and scratching in the past. A skin lesion biopsy may be done to confirm the diagnosis.
The main treatment is to stop scratching the skin. You may have:
- Counseling to help you realize the importance of not scratching
- Stress management
- Behavior modification
You may need to use these medicines on your skin:
- Lotion or steroid cream on the area to calm itching and irritation
- Peeling ointments containing salicylic acid on patches of thick skin
- Soaps or lotions containing coal tar
You many need to use dressings that moisturize, cover, and protect the area. These may be used with or without medicated creams. They are left in place for a week or more at a time.
To control itching and stress you may need to take medicines by mouth, such as:
Steroids may be injected directly into the skin patches to reduce itching and irritation.
You may need to take antidepressants and tranquilizers if the cause of your itching is emotional.
You can control lichen simplex chronicus by controlling scratching and reducing stress. The condition may return or move to different areas on the skin.
These complications of lichen simplex chronicus can occur:
- Bacterial skin infection
- Permanent changes in skin color
- Permanent scar
When to Contact a Medical Professional
Call your health care provider if:
- Symptoms get worse
- You develop new symptoms, especially signs of skin infection such as pain, redness, drainage from the area, or fever
Habif TP. Ezcema and hand dermatitis. In: Habif TP, ed. Clinical Dermatology. 5th ed. St. Louis, MO: Elsevier Mosby; 2009:chap 3.
Weisshaar E, Fleischer Jr. AB, Bernhard JD, Cropley TG. Pruritis and dysesthesia. Bolognia JL, Jorizzo JL, Schaffer JV, et al, eds. Dermatology. 3rd ed. Philadelphia, PA: Elsevier Mosby; 2012:chap 6.