Table 1:

Characteristics of patients

Characteristics	Patients	%
No. of patients	47
No. of carotid arteries	49
Sex ratio (women/men)	27/18; 1.5:1
Median age (yr) (IQR)	48 (39–56)
At least 1 vascular risk factor	22	47%
High blood pressure	8	17%
Dyslipidemia	3	6%
Mellitus diabetes	0	0%
Smoking	19	40%
History of autoimmune disease	8	17%
History of vascular event	2	4%
Recent history of viral episode	2	4%
Recent history of cervical chiropractic manipulation	0	0%
Recent history of cervical trauma	1	2%
Acute neck tenderness or cervical pain	47	100%
Affected side (left/right)	28/21
Bilateral involvement	2	4%
Median pain intensity (10-point scale) (IQR)	5 (3–6)
Cervical swelling or palpable abnormality over the carotid bifurcation	6	13%
Enlarged lymph nodes at palpation	8	17%
Fever	2	4%
Flu-like symptoms	1	2%
Neurologic-associated symptoms	8	17%
No abnormal biologic test findings	42	89%
Biologic inflammatory syndrome (elevated ESR or CRP)	3	6%
Positive serum IgM	2/18	11%
Treatments	37	79%
Anti-inflammatory treatment	34	72%
Steroids	3	6%
Follow-up	47	100%
Median follow-up duration (days) (IQR)	163 (88–354)
Full clinical recovery (SD)	47	100%
Mean recovery delay (days) (IQR)	13 (10–15)
Relapse	9	19%
Median delay before relapse (mo)	6
Persistence of abnormal laboratory test findings	0	0%

Note:—ESR indicates erythrocyte sedimentation rate; CRP, C-reactive protein; IgM, immunoglobulin-M; IQR, interquartile range.