What causes sudden leg weakness and loss of strength?

Apr 05, 2023 Source: Cainiu Health

Dr. Yang Shuwen

Introduction

Sudden leg weakness and fatigue may be related to muscle fatigue, lumbar disc herniation, cerebral hemorrhage, or other conditions, and symptomatic treatment should be conducted under a doctor's guidance. In addition, it could also be associated with cerebral infarction. It is recommended that patients engage in appropriate physical activity in daily life to enhance muscle strength and improve blood circulation, thereby alleviating symptoms of leg weakness. If symptoms are severe or persist for an extended period, prompt medical attention is advised.

Generally, sudden leg weakness or lack of strength may be related to factors such as muscle fatigue, lumbar disc herniation, or cerebral hemorrhage. Symptomatic treatment should be conducted under a doctor's guidance. Specific analyses are as follows:

1. Muscle Fatigue

After prolonged standing or physical activity, muscle fatigue can cause leg weakness and fatigue. It is recommended to reduce physical activity, rest in bed, or apply local massage to alleviate symptoms of leg weakness.

2. Lumbar Disc Herniation

Lumbar disc herniation can compress nerve roots, leading to symptoms such as lower limb weakness and numbness. Under medical supervision, patients may receive physical treatments such as massage or traction therapy to relieve leg weakness caused by muscle fatigue or lumbar disc herniation.

3. Cerebral Hemorrhage

Cerebral hemorrhage can affect the motor center, causing sudden onset during daily life, manifesting as acute leg weakness. Absolute bed rest is recommended. For patients with large hematomas or accompanying impaired consciousness, prompt surgical evacuation of the hematoma under medical guidance is necessary.

In addition, leg weakness may also be associated with cerebral infarction. Appropriate exercise in daily life can enhance muscle strength and improve blood circulation, helping to alleviate symptoms of leg weakness. If symptoms are severe or persist for an extended period, timely medical consultation is advised.

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What causes leg weakness and fatigue after a fever?

Fever generally refers to an elevated body temperature. Weakness and lack of strength in the legs after fever may be caused by lactic acid buildup, malnutrition, electrolyte imbalance, myofascial inflammation, insufficient kidney qi, or other reasons. It is recommended to undergo thorough examinations for an accurate diagnosis and receive treatment under a doctor's guidance to prevent worsening symptoms. During treatment, adequate rest should be taken, excessive physical exertion avoided, and a light diet maintained to help alleviate symptoms.

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What causes leg weakness and lack of strength after a cerebral infarction?

Leg weakness due to cerebral infarction may result from atherosclerosis in major arteries, which promotes platelet aggregation and thrombus formation. When the heart is invaded by bacteria, infective endocarditis can be triggered, leading to detachment of cardiac emboli. Hypertension may cause hyaline degeneration of cerebral arteries, resulting in cerebral ischemia and subsequent cerebral infarction. If not treated promptly, this condition can affect normal limb function, causing leg weakness and loss of strength.