Symptom

Weakness

A reduction in neuromuscular strength or the ability to generate normal force. It is sometimes used interchangeably with fatigue or generalized lethargy, although true muscle weakness is distinct from reduced energy or endurance.

Causes

  • Infectious causes

    • Influenza

    • COVID-19

    • Urinary tract infections (UTIs)

  • Endocrine and metabolic causes

    • Anemia

    • Hypothyroidism

    • Hypokalemia

    • Chronic systemic disease

    • Other electrolyte disturbances

  • Nutritional causes

    • Vitamin B12 deficiency

    • Iron deficiency

    • Malnutrition

    • Other nutritional deficiencies

  • Neurological causes

    • Stroke

    • Multiple sclerosis

    • Guillain–Barré syndrome

    • Peripheral neuropathies

    • Neuromuscular disorders

  • Lifestyle and functional causes

    • Prolonged physical inactivity

    • Chronic sleep deprivation

    • Deconditioning

  • Medications causing fatigue or neuromuscular impairment

    • Antihypertensive medications

    • Statins

    • Antidepressants

  • Depression and other psychiatric conditions

Also known as: Asthenia, Debility, Fatigue, Feebleness, Lethargy, Malaise, Muscle weakness

Referencing diagnoses

Note: Lists existing diagnoses in Diagnotize only.