The leprosy is a frequent cause of involvement of the peripheral nerves in our environment. The purpose of this study was to evaluate the nerve damage in patients with leprosy through assessment simplified of the neural function and complications, electroneuromyography and to correlate with blood dosage of anti-NGF and clinical variables of the disease. In this work was done assessment simplified and dosage of title of anti-NGF in 46 patients and electroneuromyography in 12 patients, all these patients belonged to the department of dermatology of clinic of Dermatology's epidemiology of the Núcleo de Medicina Tropical/UFPA. The work showed in the evaluation of the nerve damage executed by assessment simplified, electroneuromyography and dosage of anti-NGF, occurs predominance of the damage in the variables: male, age between 15 to 45 years, pole lepromatosy, time of treatment over 2 years and presence of reaction; The presence of nerve damage was observed in 78% of patients, with some degree of disability, in the multibacillary form, with neuritis and reaction. In respect of the assessment by simplified technique with electroneuromyography there was little agreement and no disagreement. Titles of anti-NGF were present in all clinical forms, significant in MB, somewhat higher in patients with neuritis and minors in patients with reaction. There was no significance of the titles of anti-NGF among patients with nerve damage and without damage, in the motor amendment the paucibacillary patients had average higher than the multibacillary patients, and in the sensory changes the titles were higher in patients multibacillary compared with paucibacillary patients.
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