Photosensitive skin treatment: what to know

Photosensitivity means the skin reacts abnormally to ultraviolet or visible light. The reaction can resemble sunburn, with redness, warmth, itching, tenderness, blisters, or later darkening. It can be caused by a medicine, a topical product, an underlying skin condition, or a separate light-triggered disorder. Atopic dermatitis can also leave the skin dry, itchy, cracked, or easily irritated, so the pattern and timing matter.

A clinician may review every medicine and skincare product, examine exposed and covered areas, and decide whether testing is needed. Dark marks that remain after inflammation may be post-inflammatory hyperpigmentation rather than ongoing photosensitivity.

Limit the light exposure identified by your clinician and use protective clothing, shade, and the recommended broad-spectrum sunscreen. Stop a suspected topical product only as directed, and do not stop an essential prescribed medicine without contacting the prescriber. Keep the barrier comfortable with a bland moisturiser, avoid scrubbing and fragranced products, and use prescribed anti-inflammatory treatment exactly as instructed. Record when symptoms appear and what touched or exposed the skin.

Seek prompt assessment for widespread blistering, facial or lip swelling, breathing difficulty, severe pain, fever, pus, rapidly spreading redness, or skin that is peeling extensively. New eye pain or vision change after a light reaction also needs urgent attention. Recurrent symptoms after modest exposure deserve review because the trigger may still be present.

Could a medicine or skincare product be causing this reaction? Which types of light should I avoid? What sunscreen and protective clothing suit my skin? How should I treat itching or cracking, and when can pigment treatment be considered?