Clinico-histopathological evaluation of modified pilocarpine test in early diagnosis of leprosy.

Modified pilocarpine test was done in 112 patients of which 89 cases were under investigation (Group I) and 23 cases were confirmed tuberculoid leprosy cases (Group II). In group I, 70 cases (78.6%) showed deficient sweating of varying degree and 36 cases (40.4%) showed definite histopathological changes of paucibacillary leprosy in skin. 22 cases (95.6%) in Group II showed deficient sweating. 24 cases under investigation who had deficient sweating but did not show definite histopathological changes of leprosy initially were followed up for one year and at the end of one year 10 cases (41.6%) showed confirmatory changes of leprosy on histopathological examination. The modified pilocarpine test has been found to be a simple and very useful test in early diagnosis of leprosy.