If you have psoriasis, you're used to having red, patchy, dry and itchy skin and stiff joints. But when psoriasis starts to thicken, pit, ridge and discolor your nails, it can be hard to overlook. This is called 'nail psoriasis.' Advertising Policy Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission. We do not endorse non-Cleveland Clinic products or services. Policy Nails can tell us a lot about our health. People often consider nail psoriasis a cosmetic issue, but "nail psoriasis is a medical disorder that can be managed with various medications and often with favorable results," says dermatologist Amy Kassouf, MD. This is especially important for anyone who works with their hands (surgeons, hairdressers, landscapers, etc.) or those who constantly type on a computer—the more your hands are in use, the more diminished the functionality...