Solar urticaria manifests with erythema and hives just a few minutes after exposure to sunlight (usually after 10 minutes). The first symptom is pruritus, followed by erythema and hives. These reactions usually disappear after about three hours. However, if the exposure to the sun is excessive, the symptoms can be intensified and can include headache, hypotension and even bronchospasm. It is classified in different types, according to the wave of light that provokes it. The treatment will depend on each case, but the use of sunscreens with a high protection factor is very important, as well as the use of suitable clothing that prevents the filtration of the sun's rays. The administration of medication for the most serious cases must be prescribed by a specialist.