| concurrent sick building syndrome and chronic fatigue syndrome: epidemic neuromyasthenia revisited. | sick building syndrome (sbs) is usually characterized by upper respiratory complaints, headache, and mild fatigue. chronic fatigue syndrome (cfs) is an illness with defined criteria including extreme fatigue, sore throat, headache, and neurological symptoms. we investigated three apparent outbreaks of sbs and observed another more serious illness (or illnesses), characterized predominantly by severe fatigue, that was noted by 9 (90%) of the 10 teachers who frequently used a single conference roo ... | 1994 | 8148452 |