TABLE 1.

Demographic and Clinical Features of the 19 Participants With SAPHO Syndrome

Demographic and Clinical Features (N = 19)
Age, mean ± SD, y	52.4 ± 8.6
Sex, male/female, n	4/15
Age at symptom onset, mean ± SD, y	49.6 ± 8.0
Age at osteoarticular symptoms onset, mean ± SD, y	50.5 ± 8.2
Age at skin lesion onset, mean ± SD, y	49.9 ± 8.1
Disease duration, mean ± SD, mo	29.4 ± 14.5
Osteoarticular symptoms, n (%)
Anterior chest pain	19 (100)
Spinal pain	2 (10.5)
Sacroiliac pain	3 (15.8)
Peripheral skeletal or joint pain	2 (10.5)
Craniofacial pain	1 (5.3)
Skin manifestations, n (%)
Palmoplantar pustulosis	7 (36.8)
Severe acne	5 (26.3)
Psoriasis vulgaris	2 (10.5)
Laboratory examinations
ESR, mean ± SD, mm/h	41.1 ± 21.4
hs-CRP, mean ± SD, mg/L	7.6 ± 5.2
Elevated ESR, n (%)	13 (68.4)
Elevated hs-CRP, n (%)	7 (36.8)
ANA-positive, n (%)	6 (31.6)
Rheumatoid factor–positive, n (%)	0
HLA-B27–positive, n (%)	0