In medicine terms the difference between dermatosis and photodermatosis
is that dermatosis is generic term for disease of the skin while photodermatosis is dermatosis caused by or aggravated by exposure to light.
dermatosis
English
Usage notes
Not to be confused with dermatitis which is inflammation of the skin and is a symptom of some dermatoses.
photodermatosis
Noun
(photodermatoses)
(medicine) dermatosis caused by or aggravated by exposure to light