The symptoms described are concerning because they appear to be progressive, started on one side and are now affecting both upper and lower limbs. The combination of muscle weakness, muscle fatigue with sustained activity, difficulty holding objects, difficulty keeping the arms raised, and burning sensations in the hands, legs, and feet suggests that a thorough neurological and neuromuscular evaluation is warranted.
Several different conditions can present with these symptoms, including disorders affecting the peripheral nerves, neuromuscular junction, muscles, cervical spinal cord, or metabolic/nutritional causes. Additional information would be helpful, including:
• How long the symptoms have been present and how quickly they are progressing.
• Whether there is numbness, tingling, muscle twitching, muscle wasting, balance problems, or falls.
• Any difficulty with walking, climbing stairs, swallowing, speaking, chewing, or breathing.
• Whether symptoms worsen with activity and improve with rest.
• Past medical history, medications, family history of neurological disease, and recent infections or illnesses.
Next Steps
Keep a record of symptom progression, including affected areas, severity, and any triggers.
Health Tips
Progressive weakness should not be attributed solely to fatigue or overuse without medical evaluation. While there are many potential causes, some neurological conditions benefit from early diagnosis and treatment. Until assessed, use caution with activities that could increase the risk of falls or injury if weakness worsens. Avoid excessive exertion if it significantly aggravates symptoms, and seek urgent care if breathing, swallowing, or mobility become affected.