Why do my legs feel sore, painful, and weak?
Disease description:
Recently, my legs have often felt sore, weak, and无力 (note: "无力" might be better translated as "lacking strength" or "weak"), making even walking feel strenuous. Climbing stairs has become especially difficult, as if my legs are particularly heavy. What could be causing this? Is it due to lack of exercise, or could there be an underlying health issue?
Doctor's answer (1)
Dr. Chen Jian
Leg pain and weakness can be caused by various factors, mainly including:
1. Muscle fatigue: Prolonged standing, walking, or exercising may cause leg muscles to feel tired and sore, which is one of the most common causes.
2. Lack of exercise: Although excessive exercise can cause soreness, long-term lack of exercise can also lead to muscle weakness and pain, as physical activity promotes blood circulation and muscle strength.
3. Malnutrition: Deficiencies in nutrients such as iron, calcium, magnesium, and vitamin D may also cause leg muscle weakness and pain.
4. Musculoskeletal disorders: Conditions such as myasthenia gravis, chronic fatigue syndrome, and fibromyalgia primarily affect muscles or bones, causing pain and weakness.
5. Endocrine and metabolic diseases: Conditions such as thyroid dysfunction and diabetes can affect the body's metabolism, leading to muscle malnutrition and resulting in soreness and weakness.
6. Cardiovascular diseases: Conditions such as myocardial infarction and heart failure can affect blood circulation. When the heart fails to pump sufficient blood, limbs—especially the lower limbs—may feel sore and weak due to oxygen deficiency.
7. Medication side effects: For example, statins used to lower cholesterol may cause muscle pain and weakness.
If persistent soreness and weakness occur, it is recommended to seek medical attention immediately.
