Photosensitivity can have various causes, just like most other symptoms. Finding the true cause means ruling out or confirming each possibility – in other words, diagnosis.
Diagnosis is usually a complex process due to the sheer number of possible causes and related symptoms. In order to diagnose photosensitivity, we could:
Do you get a rash from the sun? This is not the same as a sunburn. Redness may appear after only minutes, sometimes accompanied by swelling, a burning sensation, itchy blisters, small or large raised/bumpy areas, pain, fever or nausea.
Possible responses:→ Don't know
→ Regularly on face/cheeks only
→ Regularly anywhere besides the cheeks