Most people have few or no breathing problems, but for some, breathing can be a problem. Skin lesions occur in one third to one half of people with sarcoidosis. Sarcoidosis can affect the eyes, making it more difficult to see, but it rarely causes blindness. Eye symptoms usually include eye dryness but may also include swelling of the tear gland. Sarcoidosis may also affect the kidneys and sometimes may even end in kidney failure.
Sarcoidosis can also cause the heart to beat abnormally.
Inflammation of the heart muscle may occur, making the heart lose its ability to pump blood all through the body. This condition is called congestive heart failure. Sarcoidosis involving bones is very uncommon. It occurs in 3 to 4 percent of people with this disease. The hands and feet are most often affected.