What is the cause of linear moss?

summary

Most of the cases occurred in children aged 5-15 years old, but also in infants and adults. The rash occurs suddenly. At the beginning, the rash is of normal skin color or grayish white, about the size of cap needle to millet, polygonal or round flat papule, with a slight luster on the surface and a small amount of scales. In the course of the disease, papules increased, dense, continuous or intermittent, length and width of different stripes or linear arrangement. Let's share my experience with you.

What is the cause of linear moss?

The etiology is not clear. Some people think that it is related to spinal cord nerve dysfunction. Trauma or local compression can be the cause of the disease. Whether it is related to virus infection has not been confirmed.

Linear lichen planus is difficult to differentiate clinically. Lichen planus mainly occurs in adults. The skin lesions are purplish red. Wickham lines can be seen on the surface of lichen planus. The histopathology shows band like infiltration in the superficial dermis and liquefaction and degeneration of basal cell layer.

Although linear psoriasis is banded or striped, it has typical psoriatic lesions and can be easily identified by histopathology. Epidermal nevus often occurs after birth. The skin rash is hard and has horny verrucous process. The histopathological features are hyperkeratosis, thickening of spinous cell layer and papilloma like hyperplasia.

matters needing attention

The course of the disease is chronic. The rash usually subsides after a few weeks or months, and the skin returns to normal after healing, or temporary hypopigmentation spots are left, with a few lasting for a long time. The pathogenesis is not clear. Some people think that it is related to spinal nerve dysfunction, local compression and virus infection.