 In the study acutely admitted patients filling criteria for two recent DSM-4 axis 1 diagnoses one is a brief depressive period during the last two weeks are compared to age- and sex-matched patients acutely admitted with a major depressive disorder. The patients are rated with a number of rating scales at admittance, day 5, after two weeks and three months. EEG and QEEG are taken three times the first week. MRI, drug screening and blood screening of medication-concentrations are taken. 