The Victorians might have called sufferers asthenic women, but the conjunction of generalized pains concentrating over muscles where many find tender spots and some nodular tensions, predominantly in women, took the name fibrositis early in this century. The syndrome split from psychogenic rheumatism in midcentury and lost the -itis suffix more recently, when attempts to demonstrate inflammation by laboratory means, thermography, and biopsy either failed or proved inconclusive or nonreproducible.
Fibromyalgia became the generally accepted term in English-speaking countries. (Tendomyopathy, the preferred German term, also popular in adjacent European countries, is not cited in this book, although it would be well known to the author of an excellent first chapter reviewing current concepts of the disorder.) Considerable interest in the problem has recently led to a consensus conference on congruence of concepts, not yet published, and has excited some trial lawyers who claim posttraumatic onset to win compensation for clients
Ehrlich GE. Myofascial Pain and Fibromyalgia: Trigger Point Management. JAMA. 1995;274(4):351-352. doi:10.1001/jama.1995.03530040079049