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The Merck Manuals (outside the U.S. and Canada: The MSD Manuals; Chinese: 默沙东诊疗手册; pinyin: Mòshādōng Zhěnliáo Shǒucè) are medical references published by the American pharmaceutical company Merck & Co. (known as MSD outside the United States and Canada), that cover a wide range of medical topics, including disorders, tests, diagnoses, and drugs.
MSD risk factors involve doing tasks with heavy force, repetition, or maintaining a nonneutral posture. [8] Of particular concern is the combination of heavy load with repetition. [ 8 ] Although poor posture is often blamed for lower back pain, a systematic review of the literature failed to find a consistent connection.
Feeling this would indicate an organic cause of the paresis. If the examiner does not feel the "normal" leg's heel pushing down as the patient flexes the hip of the "weak" limb, then this suggests functional weakness (sometimes called "conversion disorder"), i.e. that effort is not being transmitted to either leg. [citation needed]
Fixed muscle weakness is a static symptom as the muscle will be weak regardless of exercise or rest. [ citation needed ] A majority of patients with metabolic myopathies have dynamic rather than static findings, typically experiencing exercise intolerance, muscle pain, and cramps with exercise rather than fixed weakness. [ 38 ]
[16] [15] Symptoms vary from, numbness, tingling, atrophy and weakness which can ultimately lead to permanent damage and disability. [9] [2] Neural injury recovery in acute strokes are compensated with the help of medical drugs. [24] Stretching promotes blood circulation and decreases muscle tension.
Pyramidal signs indicate that the pyramidal tract is affected at some point in its course. Pyramidal tract dysfunction can lead to various clinical presentations such as spasticity, weakness, slowing of rapid alternating movements, hyperreflexia, and a positive Babinski sign.
Acquired hand deformity refers to the structural or functional abnormalities that develop in the hand. There are multiple varying causes of acquired hand deformity, triggering significant consequences and complications.
The cause of PBP is unknown. One form of PBP is found to occur within patients that have a CuZn-superoxide dismutase (SOD1) mutation. [7] Progressive bulbar palsy patients that have this mutation are classified with FALS patients, Familial ALS (FALS) accounts for about 5%-10% of all ALS cases and is caused by genetic factors.
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