What does sun sensitivity feel like with sun allergy?

Sun allergy, also called polymorphic light eruption, may cause clusters of small bumps, raised patches, redness, or blisters on areas that receive sunlight. It commonly affects the chest, arms, neck, or lower legs, and the itch can be stronger than the visible redness. The rash may appear after the skin has been exposed and can recur during bright-weather periods. Its appearance can vary from one person to another, so a healthcare professional may check the timing, distribution, medicines, and other possible triggers before confirming the cause.

Cover exposed skin, seek shade, and limit direct light while the rash settles. Choose breathable clothing and avoid scratching, which can break the skin and invite infection. Keep a simple record of exposure and products used on the skin. If episodes repeat, arrange a dermatology assessment to discuss prevention and treatment options suited to the rash. Do not assume every light-related eruption is the same condition, especially if it begins after a new medicine or product.

Seek urgent care for breathing difficulty, swelling of the face or lips, faintness, widespread blistering, skin peeling, severe pain, fever, eye symptoms, or sores inside the mouth. Arrange prompt review when the rash is spreading quickly, becoming infected-looking, or not improving after avoiding the trigger.

Does this pattern fit sun allergy, or could another cause explain it? How can I protect the areas that react? Which medicines or creams might worsen light sensitivity? What should I do if the rash blisters or involves my eyes?