A rash is a change in the skin’s color or texture. Simple rashes are called dermatitis, which means the skin is inflamed or swollen. Some rashes can be due to an allergic reaction to medication or side effects from chemotherapy or something the skin is coming in contact with.
A dermatologist is usually able to identify the rash by looking at it and asking about accompanying symptoms. Sometimes lab test or a skin biopsy may be necessary to confirm the diagnosis. Mild rashes can often be treated with simple home care practices such as avoiding soaps and bathing in warm water. Others may require moisturizing creams, prescription medications or more extensive oral treatment.