Another prevalent skin condition among adults is psoriasis. With psoriasis, cells become confused, rapidly multiplying until a build-up of dead cells sits atop normal skin. Symptoms manifest as red, bumpy, and irritated skin with white scales. Skin is also usually very itchy, creating a lot of discomfort. Any distress is made worse by the fact that the risk areas include the scalp, elbows, and knees.Psoriasis is another skin condition whose exact cause remains a mystery. However, it tends to run in families, which leads scientists to believe there may be links to a genetic abnormality with the immune system. Other potential triggers include:• Stress• Medications (including blood pressure and antimalarial medication)• Cuts and breaks in the skin• Strep infectionsDespite not knowing the exact cause of psoriasis, there are lots of treatments available. Most involve specialised creams and ointments, with some severe cases benefiting from light therapy and steroid programmes.