FMS affects every person in a different way. You may have one set of symptoms while the next person with FMS has different ones. Your pain and other symptoms may increase, decrease or change location from day-to-day. You may feel fine one day, while the next day you feel too tired, stiff and achy to get out of bed. You may have one or more of the following symptoms of FMS: 

• Widespread pain – People with FMS feel pain in different ways. You may have stinging or burning pain. You may have aching pain that makes you feel like you have the flu. You may feel pain in a more extreme way than healthy people (also called hyperalgesia). You may also feel pain from things that do not normally cause pain (also called allodynia).

Tender points – You may have areas on your body that are abnormally sore or tender. Tender point locations include:

• Back of the head
• Between shoulder blades
• Top of shoulders
• Front sides of neck
• Upper chest
• Outer elbows
• Upper hips
• Sides of hips
• Inner knees

• Fatigue and sleep disturbances
  People with fibromyalgia often awaken tired, even though they seem to get plenty of sleep. Experts believe that these people rarely reach the deep restorative stage of sleep. Sleep disorders that have been linked to fibromyalgia include restless legs syndrome and sleep apnea.
• Difficulty with thinking – You may have short-term memory and concentration difficulties. Many peoples call this “fibro-fog” because thinking, focusing on tasks, and remembering can be hard.
• Sensitivity – You may be very sensitive to things like stress, noise, light, smells, humidity, temperature changes and medicines. You may be sensitive to substances such as caffeine, nicotine and alcohol. Exposure to these may cause your FMS symptoms to feel worse.
• Morning stiffness – You may be very stiff when you wake up in the morning. The stiffness often improves or goes away once you begin moving around and doing daily activities. You may feel stiff after sitting down or being still for long periods of time during the day.
• Depression, anxiety or distress – Like with other chronic pain disorders, some people may have symptoms of depression and/or anxiety; however, neither depression nor anxiety is known to cause fibromyalgia.

Co-existing conditions
Many people who have fibromyalgia also may have:

• Chronic fatigue syndrome
• Depression
• Endometriosis
• Headaches
• Irritable bowel syndrome (IBS)
• Lupus
• Osteoarthritis
• Post-traumatic stress disorder
• Restless legs syndrome
• Rheumatoid arthritis