Any skin inflammation caused by mites: The swelling and soreness on Jean's leg was effected by a mite and was diagnosed by her doctor to be acarodermatitis.

A skin inflammation or rash resulting from exposure to sunlight, X-rays, or atomic particle radiation: Chronic or recurrent actinic dermatitis can lead to skin cancer.

An inflammation of the skin or a rash resulting from excessive washing of the hands or an irritation caused by sensitization to a substance: "Those who wash their hands many times a day can develop irritant contact dermatitis also known as dish pan hands."

Another example of irritant contact dermatitis is when young children lick their lips repeatedly which can result in an irritant reaction to their own saliva."

A form of inflammatory skin rash that results from excess activity of the sebaceous glands in the skin; dermatitis seborrheica; eczema seborrheicum: Seborrheic dermatitis is an acute, long-term inflammatory form of dermatitis, occurring usually on oily skin in areas having large sebaceous glands.

Seborrheic dermatitis is characterized by dry, moist, or greasy scales and by crusting yellowish patches, remissions, exacerbations, and itching.