Nail Psoriasis

Nail psoriasis is inflammation related to psoriasis that can change the surface, colour, thickness or attachment of fingernails and toenails.

It may occur with skin psoriasis or psoriatic arthritis, but nail changes can sometimes be the feature that brings a person to a dermatologist. The nail plate grows from a root beneath the skin, so the visible change depends on which part of the nail unit is inflamed.

Small dents known as pits, roughness, yellow-brown patches, crumbling at the free edge and debris beneath the nail are possible. Discoloured nails and thickened nails are common presentations of nail psoriasis. A nail may also lift away from its bed, leaving a white or empty-looking area.

Psoriasis is an immune-mediated condition. When inflammation affects the nail matrix or nail bed, it changes how keratin is formed and how firmly the plate sits on the skin underneath. This is not caused by poor hygiene, and it is not contagious.

Changes often develop gradually as the nail grows. Affected nails can improve and flare, and a new healthy-looking nail takes time to grow forward from its root. Repeated pressure, picking or injury can make an already vulnerable nail more troublesome.

Nail involvement is more likely in people who already have psoriasis, especially when there are scalp or palm-and-sole changes. Joint pain, stiffness or swelling should be mentioned during assessment because psoriasis can also involve joints.

A dermatologist usually examines the nails, nearby skin and scalp, and asks about psoriasis in the person or family. Fungal infection, eczema, trauma and other nail disorders can resemble nail psoriasis, so a clipping or scraping may be sent for testing when the cause is unclear.

Treatment is chosen according to the nails involved, the degree of discomfort and whether psoriasis affects the skin or joints. Options may include medicines applied around or beneath the nail, targeted injections for a resistant area, or systemic treatment when disease is more widespread. Nail care and realistic expectations about regrowth are part of every plan.

Keep nails short, file rather than dig beneath a lifted edge, and wear gloves for wet work or cleaning products. Avoid cutting the cuticles or using harsh manicures on inflamed nails. Bring photographs of changes that come and go, as they can help show the pattern over time.

Lifting and cracking can catch on clothing and make everyday tasks uncomfortable. An altered nail can also become harder to keep clean. Seek prompt assessment for increasing pain, warmth, swelling, pus, or a dark new streak, as these signs need a separate evaluation.

Psoriasis cannot always be prevented, but protecting nails from repeated trauma and treating skin psoriasis consistently may reduce triggers for some people. Choose roomy footwear if toenails are affected and avoid using nails as tools.

A dermatologist can distinguish inflammatory nail disease from infection and coordinate care if joint symptoms are present. Mention any treatments already tried, changes in other skin areas, and whether the nails interfere with work, footwear or self-care.