Table 3. Symptomatology of victims stung by scorpions of medical interest from the Brazilian Amazon region and in vivo effects of venoms on experimental animals.

Species	Symptomatology of envenoming	Ref.
T. apiacas	Immediate local pain, electric shock sensation (Apuí, AM), local erythema, local edema, sweating, vomiting, diarrhea, pallor, tremors, myosis and agitation.	[51]
T. metuendus	Cause human envenoming. Humans: local pain, hyperemia, paresthesia, edema, tachypnea, lethargy, psychomotor agitation, mental confusion, myoclonia, sweating, sialorrhea, dyspnea, nausea, vomiting and tachycardia. Mice: restlessness, piloerection, sialorrhea, hyperactivity, respiratory difficulties, partial paralysis of limbs, exophthalmos, loss of equilibrium, convulsions and death.	[36, 52] [113] [98]
T. obscurus	Humans: Belém (PA) - Local manifestations: local and radiating pain, paresthesia, edema, erythema, sweating, piloerection and burning. Santarém region (PA) - Neurological manifestations: electric shock sensation, dysdiadochokinesia, dysmetria, dysarthria, dyslalia, nausea and vomiting, compatible with acute cerebellar dysfunction. Rats: hemorrhagic patches in the lung parenchyma and no pulmonary edema; decrease in general activity; no changes in the occurrence and intensity of induced convulsions; no hippocampal neuronal loss. Mice: edematogenic and moderate nociceptive activity; decreased locomotion, breathing difficulty, piloerection, palpebral ptosis and excessive oral and nasal secretions. The effects began 30 min after venom injection and persisted for about 3 h, while the respiratory changes persisted for 6 h.	[9, 49, 102, 114] [115] [115]
T. silvestris	Local manifestations: local pain, paresthesia and edema. Systemic manifestations: nausea, vomiting, somnolence, malaise, dyspnea, tachycardia, headache, myoclonia, hyper/hypotension, hypothermia, abdominal pain and generalized muscle spasms.	[50, 70, 113]
T. strandi	Local pain, paresthesia, erythema, edema, dysesthesia with a tingling sensation and electric shock sensation (Santarém, PA) of variable extension.	[37, 105]

Ref.: reference. The atypical sensation of electric shock registered in cases of scorpionism in the Brazilian Amazon is underlined.