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The 14 pages that link to Muscle weakness, each with the reason it gives.

• HypokalemiaRelated: It is a common manifestation when low potassium impairs muscle excitability.

• Amyotrophic lateral sclerosisNarrower topic: Progressive weakness is the central functional consequence of motor-neuron loss in ALS.

• AtaxiaCompared with: Weakness reduces force, whereas ataxia primarily disrupts the accuracy and timing of movement.

• SpasticityCompared with: Weakness often accompanies spasticity, but describes impaired force rather than increased reflex tone.

• Muscle biopsyRelated: Weakness is a common clinical reason to investigate muscle tissue.

• HypotoniaCompared with: Hypotonia concerns passive resistance; weakness concerns force production, though they can occur together.

• Muscle atrophyCompared with: Weakness can occur without muscle loss, while atrophy can exist before obvious weakness.

• MyopathyRelated: It is the central functional problem in many myopathies.

• MyotoniaCompared with: Myotonia delays relaxation; weakness concerns reduced force production.

• SyringomyeliaRelated: Syrinx-related injury can impair motor neurons and descending pathways.

• ArthrogryposisRelated: Weakness can limit fetal movement and is common in several arthrogryposis-related disorders.

• AstheniaBroader topic: Asthenia commonly presents as reduced physical strength, though its causes can be broader than muscle disease.

• MyalgiaCompared with: Separating true weakness from movement limited by pain guides clinical assessment.

• HyporeflexiaRelated: Weakness may accompany hyporeflexia, but the findings measure different functions.