Abstract
THALLIUM has been used extensively as a medicament, depilatory agent, insecticide and rodenticide and in industry.1 2 3 The most frequent cause of thallotoxicosis is the accidental or suicidal ingestion of preparations containing this poison.4 5 6 7 8 9 The clinical picture is extremely variable, comprising neurologic, gastrointestinal, cardiovascular, dermatologic and endocrine manifestations.6 , 7 , 10 , 11 The clinical diagnosis may be very difficult, especially in children who present bizarre neurologic abnormalities. One of the best signs is late alopecia.12 The lethal dose for human beings varies from 0.2 to 1 gm.13 Thallium is deposited in all the tissues, especially in the liver, kidney and intestine, and is found in . . .

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