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Statin-associated autoimmune myopathy (SAAM), also known as anti-HMGCR myopathy, is a very rare form of muscle damage caused by the immune system in people who take statin medications. [1] However, there are cases of SAAM in patients who have not taken statin medication, and this can be explained by the exposure to natural sources of statin ...
The muscle damage is most usually caused by a crush injury, strenuous exercise, medications, or a substance use disorder. [3] Other causes include infections , electrical injury , heat stroke , prolonged immobilization, lack of blood flow to a limb , or snake bites [ 3 ] as well as intense or prolonged exercise, particularly in hot conditions ...
Statin-induced rhabdomyolysis is rare, occurring in less than 0.1% of people who take statins. [64] [65] [66] Statin induced rhabdomyolysis, as with other statin associated muscle symptoms, occurs most commonly in the first year of treatment but can occur at any time during treatment. [64]
Common types of myopathy due to statins include myalgia, myositis, and rhabdomyolysis. Statins induce myopathy by inhibiting protein synthesis within the muscle. [6] Statin therapy tends to not show any histopathological differences, and thus a biopsy does not reveal too much about the damage. Often, the damage is found within the mitochondria. [1]
As with all statin drugs, it can occasionally cause myopathy, hepatotoxicity (liver damage), dermatomyositis or rhabdomyolysis. [9] This can be life-threatening if not recognised and treated in time, so any unexplained muscle pain or weakness whilst on lovastatin should be promptly mentioned to the prescribing doctor.
(G71.0) Dystrophies (or muscular dystrophies) are a subgroup of myopathies characterized by muscle degeneration and regeneration. Clinically, muscular dystrophies are typically progressive, because the muscles' ability to regenerate is eventually lost, leading to progressive weakness, often leading to use of a wheelchair, and eventually death, usually related to respiratory weakness.
When results are positive the urine normally obtains a dark, brown color followed by serum CK level evaluation to determine the severity of muscle damage. Elevated levels of serum CK greater than 5,000 U/L that are not caused by myocardial infarction, brain injury or disease, generally indicate serious muscle damage confirming the diagnosis of ...
A 2010 published meta-analysis found for every 255 patients taking a statin for 4 years, one additional case of diabetes would occur whilst preventing 5.4 major coronary events. [27] Some drugs interact with statins in a way that increases the risk of muscle injury called myopathy, characterized by unexplained muscle weakness or pain.