Weakness
A reduction in muscle strength, physical capacity, or the ability to sustain effort. May be acute or chronic, localised or generalised, and reflects a broad spectrum of muscular, neurological, metabolic, or systemic causes.
Quick answer
Weakness (ICD-10: R53.1; ICD-11: MG22.1) spans muscular, neurological, metabolic, and systemic causes. Sudden unilateral weakness requires emergency stroke exclusion. Reversible causes include nutritional deficiencies and deconditioning. Physiotherapy and nutritional support have evidence for appropriate presentations.
Recognition
Do any of these feel familiar?
Difficulty lifting, gripping, or performing physical tasks previously manageable
Legs feeling heavy or giving way
Dropping objects or difficulty with fine motor tasks
Generalised sense of physical depletion and reduced capacity
Weakness that worsens with activity or sustained effort
What is Weakness?
A reduction in muscle strength, physical capacity, or the ability to sustain effort. May be acute or chronic, localised or generalised, and reflects a broad spectrum of muscular, neurological, metabolic, or systemic causes.
Approaches Commonly Explored
Commonly explored for conditions related to Weakness, grouped by mechanism — select your subtype above to highlight the most relevant path.
How to use these approaches
Most people begin with Stabilise approaches, then progress toward Resolve and Sustain.
Physical structures — muscles, joints, fascia, and posture.
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