Numbness and Weakness in the Left Calf: Causes and Solutions

I've been feeling something unusual in the front of my lower leg for a while now?

1.
The symptoms are located in the left calf.
When applying the same pressure to other areas of the skin compared to the affected area, the affected area feels significantly more numb.
The sensations of touch and pain are less pronounced than in the right leg, giving a feeling similar to being anesthetized.
However, walking and standing for long periods are not problematic (this symptom is only present in a portion of the left calf).

2.
Sometimes at night while sleeping, there are symptoms of ischemia in the limbs.
For instance, if the symptoms occur in the right hand, it completely loses all sensation and cannot move.
Assistance from the other hand is required to position it at the level of the body, and it takes a while to feel blood flow returning before it can function normally again.
Sitting with legs crossed for too long can also produce similar symptoms.
There has been no blood donation, and the overall function of the limbs is normal.

Chard, 20~29 year old female. Ask Date: 2016/09/18

Dr. Lan Shengxing reply Neurology

Hello, it is difficult to diagnose sensory nerve issues online.
Please visit a neurology clinic for an in-person evaluation.

Reply Date: 2016/09/18

More Info

The symptoms you are experiencing in your left calf, particularly the numbness and weakness, can be indicative of several underlying issues. Given the details you've provided, it seems that the numbness is localized to a specific area of your left calf, and you also experience episodes of complete loss of sensation in your right hand, particularly during sleep or after maintaining certain positions for too long. These symptoms warrant a thorough evaluation to determine their root cause.

Possible Causes
1. Nerve Compression or Entrapment: The numbness in your left calf could be due to compression of the nerves that innervate that area. Conditions such as sciatica, where the sciatic nerve is compressed, or issues with the L5 nerve root, which can affect the lateral aspect of the calf, may lead to these symptoms. Additionally, peripheral neuropathy, which can result from diabetes or other metabolic conditions, could also cause similar sensations.

2. Circulatory Issues: The episodes of complete loss of sensation in your right hand, especially when you maintain certain positions, may suggest transient ischemic attacks or other circulatory issues. When you sit or lie in a position that compresses blood vessels, it can lead to temporary loss of blood flow, resulting in numbness and weakness. This is often seen when crossing legs or sleeping in a position that restricts circulation.

3. Musculoskeletal Issues: Tightness or strain in the muscles of the calf or surrounding areas can also lead to nerve irritation, which may manifest as numbness or weakness. If there is an imbalance in muscle strength or flexibility, it can affect how nerves function in that area.

4. Cervical or Thoracic Spine Issues: Given that you also experience numbness in your right hand, it is essential to consider potential issues in the cervical spine, such as herniated discs or cervical radiculopathy, which can lead to nerve compression and resultant symptoms in the upper extremities.

Recommended Solutions
1. Medical Evaluation: It is crucial to consult with a healthcare professional, preferably a neurologist or an orthopedic specialist, to conduct a thorough examination. This may include imaging studies like MRI or CT scans to assess for any structural issues in the spine or other areas.

2. Physical Therapy: Engaging in physical therapy can help strengthen the muscles around the affected areas, improve flexibility, and alleviate any nerve compression. A physical therapist can provide tailored exercises to address your specific symptoms.

3. Ergonomic Adjustments: If your symptoms are exacerbated by certain positions, consider making ergonomic adjustments to your workspace or sleeping arrangements. Avoid crossing your legs for extended periods and ensure that your posture supports healthy circulation.

4. Lifestyle Modifications: Regular exercise, including cardiovascular activities and strength training, can improve overall circulation and nerve health. Additionally, maintaining a healthy diet can help manage any underlying conditions that may contribute to nerve issues.

5. Medication: Depending on the diagnosis, medications such as anti-inflammatories or neuropathic pain medications may be prescribed to manage symptoms effectively.

6. Monitoring Symptoms: Keep a detailed log of your symptoms, including when they occur, their duration, and any activities that seem to trigger them. This information can be invaluable for your healthcare provider in diagnosing the issue.

In conclusion, while your symptoms may seem isolated, they could be indicative of a broader issue that requires professional evaluation. Early intervention can lead to better outcomes, so it is advisable to seek medical attention promptly.

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