Summary
In case of a sun allergy, skin changes occur characteristically after prolonged exposure to the sun. These consist of: The reactions begin during or after exposure to the sun. They can be intensified by certain drugs or substances taken, such as St. John’s wort.
A diagnosis is initially made by questioning the patient about the duration and frequency of the treatment, but medications taken and existing allergies should also be found out in the patient survey. Afterwards the skin is inspected, which can also be done with a small magnifying glass, the so-called dermatoscope. In cases of doubt, sample irradiation can also be performed to find out whether it is really a light allergy.
In some exceptional cases, it may be necessary to take samples from the skin and examine them microbiologically. The treatment consists of consistent sun protection and medication based on cortisone or fenistillum.
- Redness
- Scales
- Bubble formation
- Strong itching.
