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More about Psoriasis:
Definition Causes and symptoms Diagnosis Treatment Alternative treatment Prognosis Prevention Resources |
The cause of psoriasis is unknown, but research suggests that an immune-system malfunction triggers the disease. Factors that increase the risk of developing psoriasis include:
- family history
- stress
- exposure to cold temperatures
- injury, illness, or infection
- steroids and other medications
- race
Trauma and certain bacteria may trigger psoriatic arthritis in patients with psoriasis.
— Maureen Haggerty
