Does steroid injection into the skin treat nail psoriasis?

Nail psoriasis can cause pits, grooves, thickening, separation from the nail bed, or crumbly material under the nail. An intralesional injection places corticosteroid close to the inflamed nail unit, so a clinician may consider it when one or a small number of nails are troublesome. The nail grows slowly, which means improvement is judged as healthier nail emerging rather than an instant change to the existing plate.

The injection has limits. It may not correct damage caused by infection, trauma, or another nail disorder, and treatment can be uncomfortable. Local effects such as thinning, a lighter patch, or a small depression in the skin can occur. A clinician may need to assess the nail and sometimes test debris before choosing this approach.

Arrange a dermatology assessment if nail changes persist, spread, or interfere with handling objects. Bring a list of affected nails, how long the changes have been present, and any psoriasis elsewhere on the body. Do not inject steroid into the nail area yourself. Keep nails trimmed without digging underneath, protect them from repeated wet work or trauma, and mention medicines or infections that could affect healing.

Seek prompt medical advice for increasing redness, warmth, swelling, drainage, marked tenderness, or a rapidly changing dark streak. These findings can signal infection or another condition needing assessment rather than an injection. Severe pain after a procedure, spreading redness, or fever also warrants prompt contact with the treating clinic.

Ask whether the nail pattern fits psoriasis, whether infection testing is needed, which nail area would be treated, and what local skin changes to watch for. You can also ask how progress will be measured while the nail grows and what alternatives are available if the injection is unsuitable.