In Dublin there has been an increase in the use of Methylene dioxy methamphetamine (MDMA) or ecstasy among young people. In this case a seventeen-year-old unemployed male attended a drug treatment centre in Dublin with his mother, who had become increasingly worried about his bizarre behaviour. He admitted to taking MDMA over a five-month period, taking approximately 1-2 tablets per week at rave parties. There was evidence of disturbance throughout adolescence, as indicated by behavioural problems and suspensions at school. He had last used MDMA five days previously and almost immediately complained of shivers, cold, sweats, vomiting, and disturbing thoughts. On prior occasions, the patient suffered no adverse affects after using Ecstasy. The patient appeared frightened and had slow, deliberate speech. He exhibited paranoid delusions regarding family members and strangers. He experienced visual hallucinations and third person auditory hallucinations. Routine blood investigation and hepatitis screen were normal, as was the magnetic resonance imaging of the brain.