MeaslesĪ very contagious virus causes measles. Antihistamines and lukewarm oatmeal baths can help control the itching. Chickenpox is highly contagious, so individuals with the condition must avoid contact with others until no new blisters form, and all of the old blisters have scabbed over. The primary symptom of chickenpox is a rash that develops into itchy, fluid-filled blisters.

Some other conditions can also cause an itchy rash.

Read about 12 home remedies for psoriasis here. Options range from topical skin treatments to light therapy to systemic medications that target the immune system. Treatment depends on the severity of an individual’s psoriasis. This affects up to 30% of people with psoriasis and carries an increased risk for cardiovascular disease, diabetes, inflammatory bowel disease, and metabolic syndrome. In addition to the physical and social discomfort that an itchy psoriasis rash can cause, it can also lead to other complications, including psoriatic arthritis. Psoriasis can also cause pitting and other damage to fingernails and toenails. More severe forms of psoriasis, such as erythrodermic psoriasis, which affects a large portion of the body, or pustular psoriasis, which causes pus-filled blisters, are less common. People with guttate psoriasis develop multiple little raised, red papules and plaques. These plaques usually have a layer of white dead skin cells.Īnother common type of psoriasis is guttate psoriasis. With plaque psoriasis, which affects 90% of people with psoriasis, pink or red plaques develop in symmetrical patterns on the elbows, knees, and near the hairline. The location and appearance of plaques depend on the type of psoriasis.

This means that a person cannot contract psoriasis from coming into contact with someone who has it. It is a genetic disease that runs in families, so it is not contagious. A haywire immune system causes white blood cells to wreak havoc in the skin, resulting in red, raised, scaly plaques.Īround 2% of people living in the United States have psoriasis. Many doctors and skin specialists consider psoriasis to be an autoimmune inflammatory disorder that disrupts the normal cycle of skin cells.

Rash that itches when touched