Sunburn is the result of too much sun exposure or indoor tanning. Sunburn can cause pain, blisters, itching, peeling, and can be a factor in causing skin cancer. People with fair skin, light hair, light eyes, and freckles tend to be at a higher risk for sunburn and sun poisoning, which is a severe case of sunburn. Sun poisoning can also refer to polymorphous light eruption or solar urticaria. Follow the links below to find WebMD's comprehensive coverage about how sunburn and sun poisoning are caused, symptoms of both conditions, treatments, and much more.