To the Editor: Kitasato University East Hospital is located about 40 km southwest of Tokyo. During the earthquake on March 11, 2011, the movement around us measured upper 5 on the Japan Meteorological Agency seismic intensity scale. During the first week after the earthquake, I treated 155 psychiatric patients, of whom 141 had regularly consulted me before. These included 120 outpatients (54 with a diagnosis of epilepsy, 32 with schizophrenia, 11 with a mood disorder, eight with an adjustment disorder, five with dementia, and 10 others) and 21 inpatients (two with epilepsy, nine with schizophrenia, four with mood disorder, five with adjustment disorder, and one with dementia). No patients with acute stress disorder came to see me during the first week after the earthquake, and almost all of the patients who did come for treatment expressed their fear of the quake and the aftershocks.