What does discoloured nails feel like with nail psoriasis?

Nail psoriasis can affect the nail plate and the tissue beneath it. Colour changes may appear as yellow-red patches, white areas, or a separation that lets air under the nail. Small dents, ridges, crumbling edges, or a thicker nail can occur alongside the colour change. One nail or several nails may be involved, and discomfort is more likely when the nail catches on clothing or presses inside a shoe.

Keep nails trimmed, smooth rough edges with a fine file, and avoid picking under a lifted nail. Wear gloves for wet work and protect fingers from repeated knocks. Moisturising the nail and surrounding skin may reduce splitting and irritation. A clinician can examine the nail, check for infection or another cause, and discuss prescription treatment when psoriasis is active.

Arrange an assessment if the colour change is new, spreading, painful, or accompanied by swelling, drainage, marked lifting, or a dark band that changes. Seek prompt care after a significant injury, especially if the finger or toe is misshapen or difficult to move. A nail examination helps distinguish psoriasis from infection, trauma, or other nail conditions.

Could this colour pattern be nail psoriasis, infection, or injury? Is the nail lifting or thickening? Which treatments are suitable for the affected nails, and how should I protect them while they grow out?