The disease must be differentiated from others with which symptoms may overlap, including certain malignancies, tuberculosis, and other infections. The cause of sarcoidosis is unknown, and no known infectious agent is currently a candidate. It has been suggested that an exaggerated immune system defense reaction against some unknown substance may trigger the condition and that there may be contributing genetic factors. The remain-ing patients live with moderate degrees of impairment and disability. Know when to get help.
Sarcoidosis can occur without symptoms.
But when warning signs do occur, they include a dry cough, shortness of breath, or mild chest pain. Sometimes, these are accompanied by fatigue, weakness, and weight loss. Some cases may also include a scaly rash, reddish nodules on the legs, fever, eye soreness, and painfully swollen ankles. Less commonly, lesions may affect bones, joints, muscles or the heart and other organs. If you recognize symptoms, get to your doctor.