Classification
Sarcoidosis may be divided into the following types:

Treatment
Treatments for sarcoidosis vary greatly depending on the patient. At least half of patients require no systemic therapy. Most people (>75%) only require symptomatic treatment with nonsteroidal anti-inflammatory drugs (NSAIDs) like ibuprofen or aspirin. For those presenting with lung symptoms, unless the respiratory impairment is devastating, active pulmonary sarcoidosis is observed usually without therapy for two to three months; if the inflammation does not subside spontaneously, therapy is instituted.Major categories of drug interventions include glucocorticoids, antimetabolites, biologic agents especially monoclonal anti-tumor necrosis factor antibodies. Investigational treatments include specific antibiotic combinations and mesenchymal stem cells. If drug intervention is indicated, a step-wise approach is often used to explore alternatives in order of increasing side effects and to monitor potentially toxic effects.Corticosteroids, most commonly prednisone or prednisolone, have been the standard treatment for many years. In some people, this treatment can slow or reverse the course of the disease, but other people do not respond to steroid therapy. The use of corticosteroids in mild disease is controversial because in many cases the disease remits spontaneously. Antimetabolites
Antimetabolites, also categorized as steroid-sparing agents, such as azathioprine, methotrexate, mycophenolic acid, and leflunomide are often used as alternatives to corticosteroids. Of these, methotrexate is most widely used and studied. Methotrexate is considered a first-line treatment in neurosarcoidosis, often in conjunction with corticosteroids. Long-term treatment with methotrexate is associated with liver damage in about 10% of people and hence may be a significant concern in people with liver involvement and requires regular liver function test monitoring.
In Japanese people, ophthalmologic and cardiac involvement are more common than in other races.It is more common in certain occupations, namely firefighters, educators, military personnel, those who work in industries where pesticides are used, law enforcement, and healthcare personnel. In the year after the September 11 attacks, the rate of sarcoidosis incidence went up four-fold (to 86 cases per 100,000). History
It was first described in 1877 by Dr. Jonathan Hutchinson, a dermatologist as a condition causing red, raised rashes on the face, arms, and hands. In 1889 the term lupus pernio was coined by Dr. Ernest Besnier, another dermatologist. Later in 1892 lupus pernios histology was defined. In 1902 bone involvement was first described by a group of three doctors. Between 1909 and 1910 uveitis in sarcoidosis was first described, and later in 1915 it was emphasised, by Dr. Jörgen Nielsen Schaumann, that it was a systemic condition. This same year lung involvement was also described. In 1937 uveoparotid fever was first described and likewise in 1941 Löfgren syndrome was first described. In 1958 the first international conference on sarcoidosis was called in London, likewise the first USA sarcoidosis conference occurred in Washington, D.C., in the year 1961. It has also been called Besnier–Boeck disease or Besnier–Boeck–Schaumann disease.