I can't lift my arms and legs, what's going on?

Inability to lift arms and legs may be caused by muscle fatigue, electrolyte imbalance, nerve compression, hypothyroidism, anemia, etc.

1. Muscle fatigue:

Excessive exercise or staying in the same position for too long can cause lactic acid to build up in the muscles, causing a temporary feeling of weakness. It is common among manual workers or fitness people and is usually accompanied by muscle soreness. Proper rest, hot compress and mild stretching can relieve symptoms, and recovery usually occurs within 24-48 hours. If there is no improvement for more than 3 days, other causes need to be investigated.

2. Electrolyte imbalance:

Electrolyte disorders such as hypokalemia and hyponatremia can directly affect muscle contraction function. This condition is prone to occur in people who do not replenish minerals in time after sweating a lot in summer, or who take diuretics for a long time. May be accompanied by symptoms such as palpitations and nausea. The diagnosis can be confirmed through blood testing. Mild cases can be adjusted with oral rehydration salts, while severe cases require intravenous rehydration treatment.

3. Nerve compression:

Cervical spondylosis or lumbar disc herniation may compress nerve roots and cause limb weakness. Cervical radiculopathy often presents with difficulty in lifting the upper limbs on one side, and lumbar spine problems often affect the lower limbs. It may be accompanied by numbness and tingling, and an MRI can confirm the diagnosis. In the early stage, it can be improved through traction and physical therapy. In severe cases, minimally invasive surgery should be considered to relieve the compression.

4. Hypothyroidism:

Insufficient thyroid hormone secretion can cause generalized muscle weakness, and patients often feel "as heavy as lead." It is accompanied by symptoms of reduced metabolism such as sensitivity to cold, weight gain, and dry skin. Thyroid stimulating hormone testing can confirm the diagnosis, and long-term replacement therapy with levothyroxine sodium is required. During the period of medication, hormone levels need to be monitored regularly.

5. Anemia:

Iron-deficiency anemia or megaloblastic anemia can lead to insufficient oxygen supply to the muscles. Menorrhagia and gastrointestinal bleeding are common in women, and may be accompanied by dizziness and pale complexion. Routine blood tests show a decrease in hemoglobin. Iron, vitamin B12 or folic acid needs to be supplemented according to the type of anemia, and the underlying cause must be treated at the same time.

It is recommended to maintain a balanced diet and appropriately increase the intake of foods rich in iron and B vitamins such as lean meats and dark vegetables. Perform regular aerobic exercise such as swimming, brisk walking, etc. to enhance muscle endurance and avoid sudden strenuous exercise. Middle-aged and elderly people can regularly check their bone density and thyroid function, and office workers should move their cervical and lumbar spine every hour. If the symptoms of weakness progressively worsen or are accompanied by warning symptoms such as fever and sudden weight loss, you should seek medical attention immediately to check for neurological diseases such as myasthenia gravis and multiple sclerosis. When sleeping at night, pay attention to maintaining the natural curvature of the spine and choose a pillow with an appropriate height to avoid continued compression of nerves.