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All about psoriasis

Dr Athina Fonia
Written in association with: Dr Athina Fonia Dermatologist in North London
5.0 |

33 reviews

Published: 03/02/2026 Edited by: Conor Lynch on 03/02/2026

Psoriasis is a chronic autoimmune skin condition that accelerates the life cycle of skin cells, leading to the rapid buildup of cells on the skin’s surface. This buildup causes scaling, inflammation, redness, and itching. The most common form, plaque psoriasis, presents as raised, scaly patches that often appear on the elbows, knees, scalp, and lower back. Although psoriasis can develop at any age, it most commonly appears in early adulthood or middle age and affects both men and women equally.


The exact cause of psoriasis remains unclear, but it is linked to an overactive immune system. In people with psoriasis, immune cells mistakenly attack healthy skin cells, triggering inflammation and rapid skin cell production. Genetics play a significant role; having a family history of the condition increases the risk. Environmental factors—such as stress, infections, skin injuries, and certain medications—can also trigger or worsen symptoms.


Psoriasis is not contagious, but it can have a major impact on quality of life. Beyond physical discomfort, individuals may experience emotional distress or social anxiety due to visible lesions. The severity varies from mild patches to widespread outbreaks that can be painful and debilitating.


While there is no cure, many treatments can effectively manage symptoms. Topical therapies, such as corticosteroids and vitamin D analogues, help reduce inflammation and scaling. Phototherapy (light therapy) uses controlled ultraviolet light to slow skin cell growth. For moderate to severe cases, systemic medications and biologic therapies that target specific parts of the immune system can offer significant relief.


Healthy lifestyle choices—like moisturizing regularly, avoiding triggers, managing stress, and maintaining a balanced diet—can also help control flare-ups. With proper medical care and self-management, most people with psoriasis can lead active, fulfilling lives while keeping symptoms under control.

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