Table 4.

Statin myalgia clinical index score (SMCI) [46]

Regional distribution/pattern	POINTS
Clinical symptoms (new or increased unexplained muscle symptoms)
Symmetric hip flexors/thigh aches	3
Symmetric calf aches	2
Symmetric upper proximal aches	2
Non-specific asymmetric, intermittent	1
Temporal pattern
Symptoms onset <4 weeks	3
Symptoms onset 4–12 weeks	2
Symptoms onset >12 weeks	1
Dechallenge
Improves upon withdrawal (<2 wks)	2
Improves upon withdrawal (2–4 wks)	1
Does not improve upon withdrawal	0
Rechallenge
Symptoms reoccur upon rechallenge < 4 wks	3
Symptoms reoccur upon rechallenge 4–12 wks	1
Statin myalgia clinical index score
Probable	9–11
Possible	7–8
Unlikely	<7