A rash is a noticeable change in the skin's appearance, often characterized by redness, swelling, or irritation. Rashes can occur due to various factors, including allergies, infections, or skin conditions like eczema and psoriasis. They can appear anywhere on the body and may be itchy, painful, or cause discomfort. Treatment for rashes depends on the underlying cause. Over-the-counter creams and ointments, such as hydrocortisone, can help reduce inflammation and itching. In some cases, a healthcare professional may prescribe medications or recommend lifestyle changes to manage the rash effectively. Keeping the skin clean and moisturized is also essential for healing.