Possible causes of General weakness

18 conditions can cause this symptom. Most common are listed first.

• Hyperkalemia (elevated potassium) Common Urgent
• Hypocalcemia (low blood calcium) Common
• Hypoglycemia (low blood glucose) Common Urgent Pediatric
• Multiple sclerosis (MS) Common
• Muscular dystrophy Pediatric
• Myotonia Pediatric
• Polymyalgia rheumatica (PMR)
• West Nile virus infection Urgent
• Botulism (bacterial infection causing weakness) Urgent
• Guillain Barre syndrome (ascending muscle weakness) Urgent
• Hypokalemic periodic paralysis Pediatric
• Malabsorption syndrome Pediatric
• Motor neuron disease Pediatric
• Myasthenia gravis Urgent
• Peripheral neuropathy (nerve dysfunction)
• Poliomyelitis (polio) Pediatric
• Renal failure, chronic (kidney failure)
• Rhabdomyolysis (severe muscle breakdown) Urgent