Can nail psoriasis cause thickened nails?

Inflammation in the nail matrix or nail bed can produce a nail that is raised, ridged, crumbly, or separated from the skin beneath it. The surface may feel rough and pressure from shoes can become uncomfortable. Fungal infection and repeated injury may look similar, while a person can also have more than one nail problem at the same time.

Trim carefully across the nail and smooth sharp edges with a clean file. Avoid forcing a tool underneath a detached area, and choose shoes that do not press on the toes. A clinician can examine the nail and nearby skin, ask about psoriasis elsewhere, and tailor treatment to the pattern and symptoms.

Arrange an assessment when thickening is persistent, painful, or affecting walking, or when several nails change. Seek prompt care for drainage, spreading redness, warmth, or sudden severe tenderness. Tell the clinician about joint pain, swelling, or stiffness, since nail findings may be relevant to a broader psoriasis assessment.

Ask whether the thickening is consistent with psoriasis, whether infection needs checking, whether other nails or joints should be reviewed, and how to protect the nail during growth.