The condition was also known as Effort Syndrome
, and was attributed to several causes, including overly strenuous military duties, exposure to poison gas or disease and psychological stress.
All military conflicts have involved severe stress and although different labels have been attached in the past to reactions to war (e.g., neurasthenia, shell shock, effort syndrome
, etc., many veterans consider stress and "chronic fatigue syndrome" as inadequate to explain their symptoms.
Those diagnosed with ailments, such as the vapors, neurasthenia, effort syndrome
, epidemic neuromyasthenia, myalgic encephalomyelitis, multiple chemical sensitivity syndrome, chronic candidiasis, chronic mononucleosis, chronic Epstein-Barr viral infection, and postviral fatigue syndrome, probably all had what we now call chronic fatigue syndrome.
Of the 18 patients treated for spontaneous axillosubclavian vein thrombosis at the center between 1989 and 1997, 14 had exogenous risk factors including pregnancy; estrogen therapy; malignancy; and "effort syndrome
," which is strenuous repetitive movement of the arms and shoulders.
Some 60,000 British troops suffered from a mysterious "effort syndrome
" after World War I.