A sun rash — known medically as a polymorphic light eruption — is a skin reaction due to sun exposure. It may cause irritation but does not usually result in serious complications. It ...

Often, there may be an obvious reason for the rash, such as switching to a new soap or coming in contact with a new substance. In other cases, a caregiver may need to consult a doctor to determine ...

An itchy rash with blisters can be caused by an allergic reaction; an autoimmune disorder; a bacterial, fungal, or viral infection; and trauma to the skin. Figuring out the trigger is key to relief ...

Thyroid disease can sometimes cause repeated bouts of an itchy skin rash known as hives. In fact, up to 30% of people with chronic hives (also known as chronic urticaria) have an underlying autoimmune ...