Introduction: The investigation of impacts clinico-neurological associated with exposure to mercury levels in exposed populations are necessary in the Amazon. Objective: To analyze the emotional and motor manifestations of riparian exposed by diet in the municipalities of Itaituba/PA and Acara/PA. Method: Hair samples were collected for the determination of total Hg, obtaining of demographic data and emotional symptomatology (depression, anxiety and insomnia) and motors (paresthesia, muscle weakness, imbalance when walking, tremor, pain in the limbs and dysarthria). Results: There was a prevalence of females in both municipalities, as well as a higher frequency of women of reproductive age. The median concentration of total mercury (HgT) in Itaituba was significantly higher (p <0.0001) than in Acará. The emotional manifestations were identified in 26 (26,5%) participants from Itaituba and in 24 (52,2%) in Acará. With regard to the specific motor complaints in Itaituba occurred in 63 (64,3%) volunteers, with pain in the limbs (36,7%), paresthesia (32,6%) and muscle weakness (27,5%) the most frequently mentioned. In Acara, 33 (71,7%) participants had motor manifestations with the highest number of complaining of paresthesia (54,3%), pain in the limbs (52,2%) and tremor (34,8%). The average concentrations of HgT those with emotional manifestations, with motor manifestations and emotional and motor manifestations were above the considered tolerable (6μg/g) by the World Health Organization in Itaituba Conclusion: The results revealed the influence of the exposure levels about the emotional and motor manifestations. The monitoring with the application of qualitative and/or quantitative conventional specific tests are needed to better support and control cases, as well as the investigation of other clinical signs.
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