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Psoriasis Causes

In most cases, precise causes of psoriasis are unknown; there are, however, factors that are sometimes suspected: familial, nutritional, autoimmune disorder, microbiological and environmental.   

Genetic predisposition – a great majority of psoriasis patients have one or more members of their family also suffering from the disease. In addition, it is shown that there is a higher risk among children born to parents who have psoriasis to develop the disease; nearly 30% of psoriasis patients have a family member struggling with the disorder.  

Nutrition - Some researchers believe that a poor digestion or unhealthy diet can play a significant role in the development of psoriasis. Nutritional factors that can be linked to psoriasis include: 


  • deficiencies in vitamin A and zinc  
  • Incomplete digestion of proteins, which lead to formation of toxins in the body
  • Heavy consumption of alcohol, animal fat, dairy products and all products that can cause overload in the liver. 

Immune disorder - It is also believed that dysfunction of the immune system may participate in the development of psoriasis. In people with the disease, the T lymphocyte or T cell (a white blood cell that detect and fight off pathogenic substances) mistakenly attack healthy skin cells, leading to formation of psoriatic plaques

Medications - Some medications such as beta-blockers, lithium, iodides and antimalarial drugs seem to exacerbate psoriasis symptoms.  


Some of factors that could trigger psoriasis symptoms include:  

  • stress
  • s moking
  • cold weather
  • an injury to the skin 
  • an immunological reaction against another disease, like chickenpox 
  • systemic infection such as pharyngitis or strep throat  
  • Prolonged exposure to sunlight or chemicals such as disinfectants or paint thinners. 


   Psoriasis Symptoms                                           Psoriasis Diagnosis