Lichen simplex chronicus
Intensely itchy skin that is usually itchiest when the person is resting or relaxing. Once the skin is scratched, a vicious itch-scratch-itch cycle develops. The more the skin is scratched, rubbed, or even touched, the more it itches. The itch can become so intense that it disrupts sleep. Develops on any area of the body the person can scratch or rub. Most commonly appears on the lower legs, ankles, back and sides of the neck, wrists, forearms, and genitals. Constant itch causes nervous tension (anxiety) in some patients. Often develops on skin previously affected by an outbreak of atopic dermatitis or contact dermatitis (two common types of eczema) or psoriasis.
Who Gets It?
Neurodermatitis develops more frequently in:
The following can irritate the nerves of susceptible people, triggering the intense itch-scratch-itch cycle of neurodermatitis:
How Is It Diagnosed?
Since neurodermatitis may occur along with other common skin conditions, such as other types of eczema and psoriasis, it is best to see a dermatologist for a diagnosis. Effective treatment requires that all skin conditions be accurately diagnosed.
Diagnosis of neurodermatitis involves:
A skin biopsy. Removing a bit of the affected skin so that it can be examined under a microscope may be necessary. This procedure helps diagnose a skin infection or another skin condition.
Patch testing. This test helps determine what substances cause an allergic reaction in the patient.
The goal of treatment is to stop the itch. What makes treatment so challenging is that the patient must quit scratching, rubbing, and even touching the affected skin. To help the patient and treat the eczema, a dermatologist may prescribe a:
A mainstay of treatment, this medication helps reduce inflammation and itch. It is important to apply all corticosteroids as directed to get the full benefit and reduce the risk of side effects.
When the skin is broken, this helps to prevent infection and to treat a mild infection. Oral antibiotic. This helps clear a skin infection.
This helps reduce thick skin. A preparation containing urea, salicylic acid, or lactic acid may be used.
SEDATIVE OR TRANQUILLIZER.
In some cases, this can be helpful in reducing anxiety and help the patient to get restorative sleep.
Occlusion (wrapping the affected skin) may be used to increase the potency of medications and help the patient avoid scratching. In addition to applying medication as directed,dermatologists often recommend that patients: