Recognizing and Preventing Overexposure to Methylmercury from Fish and Seafood Consumption: Information for Physicians

Table 2

Signs and symptoms of MeHg poisoning.

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Lower level exposures

 Sleep disturbance

 Headache

 Fatigue

 Difficulty concentrating

 Depression

 Memory loss

 Diminished fine motor coordination

 Muscle and joint pain

 Gastrointestinal upset

 Hair thinning

 Heart rate disturbance

 Hypertension

 Tremor

 Numbness or tingling around the mouth

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Highest level exposures

 Numbness or tingling in hands and feet

 Clumsy gait, difficulty walking (ataxia)

 Slurred speech

 Tunnel vision

 Diminished visual acuity

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