Article: Symptoms, syndrome, and semantics: multiple chemical sensitivity and chronic fatigue syndrome. (Editorial)

Definition of a syndrome, based on symptoms alone, is sometimes precarious and may be impossible. The syndrome of multiple chemical sensitivity (MCS) is a perplexing diagnostic problem. Which symptoms distinguish it? MCS symptoms' can be considered in three categories: (1) irritative-respiratory (nasal congestion, dryness, burning, chest pain, and palpitations); (2) central nervous system (concentration problems, memory difficulties, insomnia, drowsiness, irritability, depression, and nervous tension); and (3) vegetative (fatigue, headache, arthralgias, myalgias, food craving, and gastrointestinal distress).

The possibility has been entertained that chronic ...

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