Table 1.

Symptom severity and impairment scores.

Symptoma	Rank	Severityb		Impairedc
		Mean	SD	%
Feeling fatigued or having low energy	1	2.9	1.3	20
Muscle aches and pains	2	2.5	1.3	7.9
Not feeling rested upon wakening	3	2.5	1.5	1.4
Trouble with memory	4	2.4	1.3	6.0
Feeling worse after normal physical exertion	5	2.4	1.5	2.3
Slower speed of thinking	6	2.4	1.4	10.2
Trouble finding words or retrieving names	7	2.3	1.4	4.7
Needing more sleep than usual	8	2.2	1.5	1.4
Trouble falling or staying asleep	9	2.2	1.5	2.3
Joint pain or swelling	10	2.2	1.5	6.5
Stiff or painful neck	11	2.1	1.5	1.9
Muscle weakness	12	2.1	1.4	2.8
Back pain	13	2.1	1.5	6.0
Numbness or tingling	14	1.9	1.5	0.9
Headaches	15	1.9	1.4	5.1
Feeling irritable, sad, or decreased pleasure	16	1.9	1.4	2.8
Feeling panicky, anxious, or worried	17	1.8	1.5	3.7
Shooting, stabbing or burning pains	18	1.8	1.5	0.9
Change in visual clarity or trouble focusing	19	1.8	1.5	0.9
Discomfort with normal light or sound	20	1.7	1.5	2.3
Balance problems or sense of room spinning	21	1.7	1.5	2.3
Skin or muscle twitching	22	1.6	1.5	0.9
Hot or cold sensations in extremities	23	1.6	1.5	0.5
Light headed or uncomfortable on standing	24	1.6	1.4	0.5
Sweats and/or chills	25	1.4	1.3	1.9
Bladder discomfort or change in urination	26	1.2	1.4	-
Irregular or rapid heart beats	27	1.1	1.3	0.9
Nausea and/or vomiting	28	1.1	1.3	1.4
Shortness of breath	29	1.0	1.1	1.4
Feeling feverish	30	0.7	1.1	-

SD is standard deviation.

^aPatients were asked how much they had been bothered by each of the symptoms listed during the past 2 weeks.

^bSymptom severity: 0 = not at all, 1 = a little bit, 2 = somewhat, 3 = quite a bit, 4 = very much.

^c% of total respondents (N = 215) who identified symptom as most impairing on work, social, or family functioning.