These are the causes of psoriasis

A combination of genetic predisposition and environmental factors may cause or exacerbate the disease.

Triggers for an outbreak or an exacerbation of psoriasis may be: 

• Infections and diseases
• Medication
• Injuries, areas of pressure, mechanical irritation, tattoos
• Psychological factors
• Stress
• Metabolic disturbances
• Hormonal factors
• Alcohol
• Nicotine
• Being overweight

Avoid triggers

Affected patients can exert some control over the severity and frequency of psoriasis flare-ups by avoiding the things that trigger or exacerbate their symptoms. Improved stress tolerance and the avoidance of unnecessary strain and skin irritations are extremely important. An anti-inflammatory diet, losing excess weight and avoiding alcohol and smoking frequently help.