What to expect from excimer laser therapy for scalp psoriasis

Scalp psoriasis can produce raised, scaly, itchy plaques that extend into the hairline. Excimer therapy directs a concentrated ultraviolet beam at affected skin, helping reduce inflammatory activity while sparing most unaffected areas. During a session you may feel warmth or a brief prickling sensation. Treated skin can look pink or feel tender afterwards, and the clinician adjusts exposure according to your skin response.

Tell the clinician about recent sun exposure, sunburn, light-sensitive medicines, active infection, or a history of unusual reactions to ultraviolet light. Follow instructions about washing the scalp and applying prescribed scale-softening or anti-inflammatory products. Do not scratch plaques before treatment. After each session, protect the scalp from unnecessary sun and report persistent irritation before the next appointment.

Contact the clinic if redness, pain, swelling, blistering, or crusting is pronounced or continues to worsen. Seek assessment for pus, spreading warmth, fever, or rapidly increasing scalp tenderness, which may indicate infection. Eye pain or vision changes after facial exposure needs urgent medical attention. Severe flares, hair loss in smooth patches, or joint pain should also be discussed because scalp symptoms may occur alongside other psoriasis features.

Ask whether your plaques are suitable for focused light treatment, how scalp hair and scale will be managed, and how improvement will be judged. Discuss how this fits with your current medicines, what to do after a missed session, and whether other body areas need a separate plan.