Dermatitis is a general term which refers to the inflammation of the skin. Typical symptoms are rash, itching, blisters and pustules that can crust over.
There are different causes of dermatitis- eczema, due to irritants or allergens in the home or workplace or due to excessive areas of oily skin.
Psoriasis is a chronic inflammatory skin condition that occurs equally in men and women. It can be seen as defined red plaques (red, flaky, crusty patches of skin) varying in size and shape and covered with white or silvery scales. The most commonly affected areas are the elbows, knees, nails, scalp and lower back, however it can appear anywhere on the body.
People with psoriasis have an increased production of skin cells. Skin cells are normally made and replaced every three to four weeks, but in Psoriasis this process only lasts about three to seven days. The resulting build-up of skin cells is what creates the patches associated with psoriasis.
Eczema is a condition that causes the skin to become itchy, red, dry and cracked.
Eczema is believed to result from a genetic defect that results in the abnormality of the skin’s barrier function, possibly combined with an abnormal function of the immune system. People with eczema can often have a family history of the condition and outbreaks can be triggered by environmental irritants or allergens.
The goals for eczema treatment are to essentially prevent the itching, redness and inflammation which are associated with the condition.
Rosacea is a chronic condition characterised by facial redness and sometimes pimples. It often begin with episodes of flushing, where the skin turns red for a short period, but other symptoms can develop as the condition progresses, such as:
Strenuous exercise, stress and sunlight can sometimes be identified as triggers that make the condition worse. The exact cause of rosacea is unknown.