Psoriasis, psoriatic arthritis and intestinal illness are “associated” and co-morbid conditions in many chronic diseases, ranging from mental illness to cancer. Chronic intracellular infection and the infectious cascade can cause skin disease through self-inoculation and eruption, and painful joints through spread of the pathogen and inflammation caused by chronic infection.
Over time, chronic intracellular infection can become many different chronic diseases, and co-morbid conditions, in different patients. In diagnosing the root causes of chronic disease and seeking to discover effective treatment, look behind the obvious symptoms that define a diagnosis; and search for (and find or rule-out) a common root infectious cause, understanding the commonalities between “related”, “associated”, and co-morbid diseases.