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.
Sunburn (also called erythema) is caused by overexposure to ultraviolet radiation (UV rays). While the symptoms are usually temporary (like red skin that is painful to the touch), skin damage is cumulative throughout a person's life and can develop into serious long-term health effects, including skin cancer. Mild sunburn results in skin irritation and redness and can be safely treated at home.