Is nail psoriasis considered an infectious disease?

Nail psoriasis is not classified as an infectious disease because it is an autoimmune disorder rather than one caused by pathogens like bacteria or viruses. In individuals with nail psoriasis, the immune system mistakenly attacks healthy skin cells, leading to inflammation and the characteristic changes seen in the nails, such as pitting, ridging, and discoloration.

Infectious diseases can be spread from person to person, while nail psoriasis is not contagious. It can, however, be associated with other factors, such as genetics or previous skin conditions, and it often requires specific treatments aimed at managing symptoms rather than targeting infectious agents. Therefore, stating that nail psoriasis is not an infectious condition accurately reflects its nature as an autoimmune disorder.