Lichen simplex chronicus
（重定向自Neurodermatitis）
![](/Images/godic/202501/29/Lichen_simplex_chronicus_-_very_low_mag4755.jpg")
Lichen simplex chronicus (also known as "Neurodermatitis") is a skin disorder characterized by chronic itching and scratching. The constant scratching causes thick, leathery, brownish skin. This condition is more common between ages 30 and 50 and is seen more in women than in men.