In more than two thirds of all cases of intermediate uveitis, the exact cause is unknown. The remaining third of all cases are thought to be caused by conditions such as:
Sarcoidosis, a kind of inflammation that can affect many parts of the body. Its cause is unknown.
MS (multiple sclerosis) an inflammatory disease that affects the brain and spinal cord
Lyme disease, a disease caused by bacteria that are transmitted to people from the bite of a deer tick. It often causes a "bull's-eye" rash around the bite, with symptoms such as fever, tiredness, headache, muscle and joint aches.
