trust me, you will know when it's bad. There are few things in this world that smell as bad as a rotten potato. It may also be slimy. Those 'barnacle things' are fine. The potato is a root, those things are just shoots. Rub them off and you'll be fine.
Malignant hyperthermia (MH) is a rare, inherited skeletal muscle syndrome that presents as a hypermetabolic reaction triggered by exposure to volatile anesthetic gases or the depolarizing muscle relaxant, succinylcholine. 1,2 The incidence of MH is difficult to quantify.
In turn this triggers the sarcoplasmic reticulum to release calcium ions into the muscle interior where they bind to troponin, thus causing tropomyosin to shift from the face of the actin filament to which myosin heads need to bind to produce contraction.