[A pseudopsychiatric case caused by thrombotic thrombocytopenic purpura]

The present article describes the case of a woman, aged 25 years, who the non-specific and variable neurologic symptomatology and the confusional episodes observed at admission required psychiatric care until the diagnosis, and subsequent treatment, of thrombotic thrombocytopenic purpura (TTP) was done. The variable and unstable manifestations induce "to interpret the disease psychologically", we must not forget the importance of the somatic assessment in psychiatry to prevent premature and mistaken conclusions that delay a correct diagnosis and, therefore, an adequate treatment.