Sun poisoning–a medical condition referred to as polymorphous light eruption–can occur when a light-sensitive person is exposed to the ultraviolet (UV) radiation given off by the sun. Fair-skinned women who are under the age of 30 are at the highest risk of developing sun poisoning. If you plan to participate in outdoor activities, wear sunscreen and cover vulnerable skin with clothing to prevent the development of sun poisoning symptoms.
Skin Rash
The most common sun poisoning symptom is the appearance of a skin rash within several hours of UV sunlight exposure, warns the Merck Manual. The skin rash can appear on any region of your body, but occurs most frequently on the chest, front of the neck, arms and thighs. You can notice red patches of skin at the affected site that can appear bumpy or dry. The affected skin may itch or burn, which can be uncomfortable. This rash typically persists for at least one week, but may recur if you venture back out into the sun without first protecting your skin.
Skin Blisters
High skin sensitivity to sunlight or prolonged sunlight exposure can lead to the development of skin blisters, explains doctors at the Mayo Clinic. Blisters may initially appear as a red skin rash that is tender to the touch. This skin rash can be swollen or inflamed and can become a fluid-filled blister several hours after sun exposure. Do not intentionally pop or drain the blister, as this can increase your risk of developing a skin infection. Skin blisters that form as a result of sun poisoning may require additional medical attention from your doctor to ensure that your skin heals properly.
Flu-like Symptoms
You can develop flu-like symptoms as a sign of sun poisoning. Fever, chills, upset stomach, vomiting or headache can indicate a severe sun poisoning reaction, warns Medline Plus. If you suddenly develop flu-like symptoms while spending time outdoors, seek shelter in the shade or inside a building to prevent further sun exposure. Contact your doctor if you experience flu-like symptoms in conjunction with the development of skin blisters or an extensive skin rash.