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Table 1 Signs and symptoms of lithium intoxication in three degrees

From: Electrocardiographic changes caused by lithium intoxication in an elderly patient

Degree of intoxication

Signs and symptoms

Mild intoxication

Nausea/vomiting, diarrhea, drowsiness, lethargy, coarse hand tremor, and muscular weakness

Moderate intoxication

Nystagmus, ataxia, confusion, and myoclonus

Severe intoxication

Seizures, impaired consciousness, coma, and death