chronic muscle pain in arms

79 yo F with Chronic muscle pain

79 yr old female with chronic muscle pain in arms, short-term memory loss and bouts of tiredness. Statins or not statins? I would greatly appreciate some advice. Client generally healthy, socially and physically active. Cataract operation last year. On following meds: Simvastatin (20mg, recently reduced from 40mg ), Ramipril, thyroxine…