There are 39 conditions associated with excessive sweating and skin rash. The links below will provide you with more detailed information on these medical conditions from the WebMD Symptom Checker and help provide a better understanding of causes and treatment of these related conditions.
Sunburn is often associated with a rash that begins as a small, pink patch on the skin or a mole-like spot than then start spreading out. The rash appear within 12 to 24 hours after exposure to UV rays and can be particularly worse if you are under certain medications such as Doxycycline.
The answer is YES, sunburned skin can get swollen. Swelling of the skin, otherwise known as edema, is usually a sign of severe sunburn and is usually caused by inflammation of skin cells as a result of damage by UV rays. Sunburn swelling is one of the main symptoms of severe damage to the skin.