Table 1.

Laboratory tests and results

Laboratory tests	Results
Erythrocyte sedimentation rate	Normal
C-reactive protein	Normal
Antinuclear antibody	Negative
Double-stranded DNA	Negative
Venereal disease research laboratory	Negative
Antistreptolysin O titre	Elevated
Thyroid function tests	Normal
Liver function tests	Normal
Serum calcium	Normal
Creatinine kinase-muscle/brain	Normal
Throat swab culture	No pathogen
Creatinine kinase-total	Elevated