Neurodermatitis is a common chronic inflammatory disease characterized by episodic severe itching and lichenoid skin changes, frequently seen in young and middle-aged adults. It often occurs in areas such as the neck, lateral sides of both elbows, sacral region, thighs, perineum, and around the anus. When it affects the scrotal area, its base layer can appear as pinpoint or rice-grain-sized polygonal flat papules, in light red, light brown, or normal skin color, generally firm and shiny. The surface may have small amounts of scale. Due to repeated scratching and rubbing, the lesions can gradually merge into large patches, and the local skin becomes thickened and rough, forming lichenoid changes accompanied by severe itching.