The various fibromyalgia triggers are over exertion,
stress, lack
of exercise, anxiety, depression, lack
of sleep,
trauma, extremes of temperature or humidity, and infectious illness. The suggested causes are immune system problems like toxins accumulating in muscles from lactic acid buildup. Disturbances in brain chemistry like depression, insomnia, infection with Epstein barr virus, which causes infectious mononucleosis, food allergy and emotional stress.