Overview

Sarcoidosis is a disease characterized by the growth of tiny collections of inflammatory cells (granulomas) in any part of your body - most commonly the lungs and lymph nodes. But it can also affect the eyes, skin, heart and other organs.The cause of sarcoidosis is unknown, but experts think it results from the body's immune system responding to an unknown substance. Some research suggests that infectious agents, chemicals, dust and a potential abnormal reaction to the body's own proteins (self-proteins) could be responsible for the formation of granulomas in people who are genetically predisposed.There is no cure for sarcoidosis, but most people do very well with no treatment or only modest treatment. In some cases, sarcoidosis goes away on its own. However, sarcoidosis may last for years and may cause organ.SymptomsSigns and symptoms of sarcoidosis vary depending on which organs are affected. Sarcoidosis sometimes develops gradually and produces symptoms that last for years. Other times, symptoms appear suddenly and then disappear just as quickly. Many people with sarcoidosis have no symptoms, so the disease may be discovered only when a chest X-ray is done for another reason.General symptomsSarcoidosis can begin with these signs and symptoms:FatigueSwollen lymph nodesWeight lossPain and swelling in joints, such as the anklesLung symptomsSarcoidosis most often affects the lungs and may cause lung problems, such as:Persistent dry coughShortness of breathWheezingChest painSkin symptomsSarcoidosis may cause skin problems, which may include:A rash of red or reddish-purple bumps, usually located on the shins or ankles, which may be warm and tender to the touchDisfiguring sores (lesions) on the nose, cheeks and earsAreas of skin that are darker or lighter in colorGrowths under the skin (nodules), particularly around scars or tattoosEye symptomsSarcoidosis can affect the eyes without causing any symptoms, so it's important to have your eyes checked regularly. When eye signs and symptoms do occur, they may include:Blurred visionEye painBurning, itching or dry eyesSevere rednessSensitivity to lightHeart symptomsSigns and symptoms related to cardiac sarcoidosis may include:Chest painShortness of breath (dyspnea)Fainting (syncope)FatigueIrregular heartbeats (arrhythmias)Rapid or fluttering heart beat (palpitations)Swelling caused by excess fluid (edema)Sarcoidosis can also affect calcium metabolism, the nervous system, the liver and spleen, muscles, bones and joints, the kidneys, lymph nodes, or any other organ.

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