As well as the chronic pain, including skeletal pain, and tenderness, some or all of the following symptoms might be present:
Neurological: dysfunctions of muscles, ligaments and joints – numbness, tingling; abnormal muscle twitch response, muscle cramps, muscle weakness; headaches, generalised weakness, dizziness, and sensory overload. Neurocognitive: These are usually present and include: impaired concentration and short-term memory problems, impaired speed of performance, inability to multi-task, one is easily distracted, and/or cognitive overload. Sleep disturbances: Like ME/CFS sufferers, most people with FM experience nonrefreshing sleep. This is usually accompanied by insomnia, frequent nocturnal awakenings, nocturnal muscle twitching, and/or restless leg syndrome. Autonomic and/or neuroendocrine: These include but are not limited to: cardiac arrhythmias, neuraly medicated hypotension, vertigo, temperature instability, hot/cold intolerance (intolerance to very hot or very cold weather), respiratory disturbances, irritable bowel or bladder dysfunction, dysmenorrhea, loss of adaptability and tolerance for stress, reactive depression. Stiffness: Generalized or even regional stiffness that is most severe upon awakening and typically lasts for hours. Stiffness can return during periods of inactivity during the day.
