Final answer:
McArdle's disease is a glycogen storage disorder affecting muscle glycogen breakdown. Herr's Mnemonic seems to be unrelated to any medical condition, and typically, mnemonics are memory aids. Metabolic disorders like glycogen storage diseases require specialized medical professionals.
Step-by-step explanation:
McArdle's disease is a form of glycogen storage disease that affects the muscle's ability to break down glycogen. This results in a deficiency in glycogenolysis, particularly in skeletal muscle, leading to symptoms such as muscle cramps and exercise intolerance. Similarly, Glycogen storage disease type-II, also known as Pompe disease, is characterized by a buildup of glycogen leading to progressive muscle weakness affecting various body tissues, including the heart, skeletal muscles, liver, and nervous system.
Getting to the question at hand, Herr's Mnemonic is not a recognized medical condition or concept. It appears that there might be some confusion or typo in the question. Generally, mnemonic devices are used for memorization in educational contexts, not for describing diseases or health conditions.
However, if we discuss careers related to glycogen storage diseases and the broader category they fall into, a career in mitochondrial disease as a physician can provide insight. Mitochondrial diseases are a group of genetic metabolic disorders that result from mutations in nuclear or mitochondrial DNA, leading to less energy production in body cells. Specialists in this field require extensive education and medical genetics training.