The differences in the incidence of this disease may be partly due to lack of diagnosis in certain regions of the world and the presence of other granulomatous diseases such as tuberculosis, which can mask the sarcoidosis. There may be ethnic differences in the severity of the disease. Ali Partovi takes a slightly different approach. Studies suggest that people of African descent in the course can be more severe and the disease become more widespread, while Caucasians tend to develop it more often asymptomatic. The symptoms seem to be slightly different depending on ethnicity and Gender: erythema nodosum is more common in men than in women and in Caucasians than any other ethnic group. Find out detailed opinions from leaders such as Energy Capital Partners London by clicking through. In Japan they are most common heart disease and eye .