Table 1.

Prevalence of neurological symptoms for participants with and without fibromyalgia

	Fibromyalgia (n = 166)		No Fibromyalgia (n = 66)
Symptom	%	(95% CI)	%	(95% CI)
Blurred vision1	46	(38 – 54)	6	(2 – 15)
Bright lights bother eyes1	70	(62 – 78)	6	(2 – 17)
Double vision2	15	(10 – 23)	1	(0 – 8)
Loss of peripheral vision2	10	(6 – 17)	1	(0 – 8)
Floaters, wavy lines, flashing lights	42	(34 – 50)	25	(15 – 39)
Dizziness1	53	(45 – 62)	4	(1 – 13)
Poor balance1	63	(54 – 71)	4	(1 – 13)
Ringing in ears1	46	(38 – 55)	13	(6 – 25)
Ear pressure1	35	(27 – 44)	2	(0 – 8)
Decreased hearing2	25	(18 – 33)	7	(2 – 18)
Vertigo1	30	(23 – 39)	1	(0 – 10)
Noises or talking that hurts ears1	45	(36 – 54)	1	(0 – 10)
Difficulty swallowing1	29	(23 – 37)	0	--
Sleep apnea1	32	(24 – 41)	3	(1 – 12)
Tremors2	16	(11 – 23)	3	(1 – 13)
Palpitations1	28	(21 – 36)	3	(1 – 12)
Poor coordination1	45	(38 – 53)	0	--
Constant throat pain or sore throat1	35	(27 – 43)	1	(0 – 9)
Lightheadedness1	52	(45 – 60)	0	--
Shortness of breath1	39	(31 – 49)	1	(0 – 9)
High blood pressure1	23	(16 – 32)	4	(1 – 13)
Tingling in arms or legs1	54	(46 – 63)	4	(1 – 14)
Numbness in any part of body1	50	(41 – 58)	3	(1 – 10)
Burning feeling in arms, legs, face, or torso1	38	(30 – 47)	2	(0 – 11)
Cannot feel hot objects in hands	3	(1 – 8)	0	--
Weakness in arms or legs1	58	(49 – 66)	2	(1 – 10)
Abnormal clumsiness1	38	(31 – 46)	0	--
Loss of muscle mass1	13	(9 – 19)	0	--
Incontinence of urine2	25	(18 – 33)	7	(3 – 19)

Prevalence estimates and p-values are age- and sex-adjusted when possible based on sample composition, otherwise estimates are unadjusted and p-values from Fisher’s exact test

¹p<0.01

²p<0.05

CI = confidence interval