Bloodborne diseases such as hepatitis C, measles and herpes simplex virus may trigger autoimmune disorders, according to WebMD and Krisha McCoy for Everyday Health. Researchers have found that both an infection and a genetic susceptibility must be present for autoimmune disorders to develop in many cases.
A minority of patients infected with the hepatitis C virus subsequently contract autoimmune hepatitis, explains WebMD. People with both conditions have more symptoms than people with only one condition. Symptoms include fatigue, joint pain, itchy skin, sore muscles and dark urine. The virus can be contracted by sharing needles with an infected person and exposing oneself to infected blood. Treatment of the infection includes medications that can cure a patient within a few months.
People who contract the measles virus may be susceptible to multiple sclerosis, notes McCoy. Symptoms of measles include dry cough, conjunctivitis, runny nose and high fever, states MedicineNet. The virus is highly contagious and can be contracted by those who are not vaccinated for it. After symptoms develop, the only way to treat the disease is to alleviate symptoms and prevent complications such as pneumonia.
The herpes simplex virus may cause myasthenia gravis in some infected people, states McCoy. The virus can cause infections affecting the mouth, genitals and other areas and causes a common symptom of blisters on a red base, explains MedicineNet. The virus is treated with medications to reduce pain and shorten healing time, but it can be reactivated in the future.