Symptoms include redness of the eye, pain, and sensitivity to light. If not treated properly, blindness may result. An unidentified toxic substance. An unknown environmental cause. An inherited or genetic cause.
Doctors have several ways of detecting sarcoidosis.
During the medical history and physical exam, doctors often will discover enlarged, tender lymph glands and a dry cough. In most cases, chest x-rays will detect nodules in the lungs. These are found even in people who have no obvious symptoms. X-rays can detect other abnormal signs in the lung and chest resulting from sarcoidosis. After the piece of tissue is removed, it is examined under a microscope to see if granulomas are present.