Can nail psoriasis cause discoloured nails?

Nail psoriasis can produce yellowish or reddish-brown areas, small pits, roughness, or separation from the nail bed. Changes may affect fingernails, toenails, or both, and skin or joint symptoms may occur alongside them. Fungal infection can create overlapping features, so a discoloured nail should not be labelled from colour alone.

Keep nails short, protect them from knocks, and moisturise the surrounding skin if it is dry or cracked. Avoid cutting cuticles or scraping under the nail. Arrange a dermatology assessment if changes persist; the clinician may examine your skin and joints and decide whether testing is needed to separate psoriasis from infection.

Seek an appointment for ongoing colour change, nail separation, tenderness, or new pits and ridges. Request prompt care for pus, spreading redness, marked swelling, or severe pain. Mention new finger or toe stiffness, swelling, or morning joint discomfort, because these details can change the assessment.

Ask whether the pattern fits nail psoriasis, whether fungus should be ruled out, whether other nails or joints need examination, and which treatment is suitable for the affected area.