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Table 3 Symptom intensity during the past week [in descending order of severity]

From: An internet survey of 2,596 people with fibromyalgia

Symptom Mean ± SD
Morning stiffness 7.2 ± 2.5
Fatigue 7.1 ± 2.1
Nonrestorative sleep 6.8 ± 2.7
Pain 6.4 ± 2.0
Forgetfulness 5.9 ± 2.7
Concentration 5.9 ± 2.6
Difficulty falling asleep 5.6 ± 3.3
Muscle spasms 4.8 ± 3.2
Anxiety 4.5 ± 3.1
Depression 4.4 ± 3.1
Headaches 4.3 ± 3.1
Anger 3.9 ± 2.9
Restless legs 3.6 ± 2.7
Abdominal pain 3.6 ± 2.8
Poor balance 3.5 ± 2.9
Swelling of feet and ankles 3.2 ± 3.1
Dizziness 2.9 ± 2.8
Bladder problems 2.5 ± 2.9
Skin rashes 1.9 ± 2.9