The vast majority of people who have nail psoriasis also have classic psoriasis symptoms on other parts of the body, usually silvery, scaly patches of built-up skin that sometimes turn red and become itchy. Conversely, about half of all people with psoriasis have symptoms in the nails. In rare cases, nail psoriasis occurs without any signs of a skin condition. Nail psoriasis can affect both the toenails and fingernails. The severity of the symptoms of psoriasis in the nails varies from person to person and does not necessarily follow the severity of the skin psoriasis. It is possible to have severe symptoms in the nails even if the problems elsewhere on your body are mild.
The symptoms of psoriasis in the nails can be very similar to the symptoms of nail fungus, or onoychomycosis, and sometimes a fungal infection occurs simultaneously with psoriasis in the nail. Nail psoriasis can also occur together with paronychia, in inflammation of the skin that surrounds the nail. The condition is chronic and even though it is not life-threatening it can cause pain, functional problems and embarrassment. If you experience any of these symptoms it may be time to seek treatment for nail psoriasis: