Dermatosis is any condition affecting the skin, nails, skin glands or hair according to Healthline. Dermatosis does not include inflammation, as inflammation of those areas is called dermatitis.
Common ailments that fall under the heading of dermatosis include moles, or dark growths on the skin, and impetigo, a bacterial infection of the skin, according to Healthline. Some of the lesser-known dermatosis conditions include juvenile plantar dermatosis and rheumatoid neutrophilic dermatosis. Diagnosis of any skin condition should be made by an expert, as biopsies may be needed for further diagnosis and treatment. Discuss any changes to the skin with a healthcare provider.