Loss of Sensation After Car Accident: Skin Numbness

Loss of skin sensation after a car accident?

At the end of May, I was involved in a car accident where my lower back was impacted.
At the time, there were no external injuries, but I developed a large bruise and a hematoma.
After about a month, the bruising and swelling mostly subsided.
However, in the second month, I suddenly experienced numbness and pain in the soles of my feet that radiated to my calves, which lasted for about 2-3 weeks before resolving.
Now, over three months later, there is no noticeable swelling in my lower back, and I have no issues walking.
However, there is still pain upon palpation, and I can feel a very small hard lump.
During exercise or while riding a bike, I can still sense a foreign body feeling in my lower back.
Additionally, there is an area of skin on my lower back where I cannot feel any sensation; even when pricked with a sharp object, I feel nothing.
This condition has persisted for over a month without improvement.
I have researched but cannot find information regarding sensory loss, and I am becoming increasingly concerned about the possibility of not recovering.

Aaron, 20~29 year old female. Ask Date: 2020/08/27

Dr. Li Zhonghuai reply Surgery

Hello! It is recommended to consult a general surgeon and undergo an ultrasound to check for any residual blood clots that have not been absorbed.
Take care! Changhua Hospital cares about you!

Reply Date: 2020/08/27

More Info

Loss of sensation in the skin following a car accident can be a concerning symptom, and it is essential to understand the potential causes and treatment options available. Based on the information provided, it appears that the individual experienced a significant impact to the lower back during the accident, which resulted in bruising and a hematoma. Although the bruising has mostly resolved, the persistent numbness in the skin and localized pain suggests that there may be underlying nerve involvement or damage.

Possible Causes of Loss of Sensation
1. Nerve Injury: The impact from the car accident could have caused trauma to the nerves in the affected area. Nerves can be compressed, stretched, or even severed during such incidents, leading to a loss of sensation. The numbness in the skin could indicate that the sensory nerves are not functioning properly.

2. Hematoma Formation: The presence of a hematoma (a localized collection of blood outside of blood vessels) can exert pressure on surrounding tissues, including nerves. This pressure can lead to temporary or permanent nerve damage, resulting in numbness or altered sensation.

3. Neuropraxia: This is a type of nerve injury that occurs when a nerve is compressed or stretched but not severed. It can lead to temporary loss of function, including sensation. Recovery can vary, and while some individuals may regain full sensation, others may experience lingering effects.

4. Scar Tissue Formation: After an injury, scar tissue can form, which may entrap or irritate nearby nerves. This can lead to symptoms such as pain, tingling, or numbness in the affected area.

Treatment Options
1. Medical Evaluation: It is crucial to seek a thorough evaluation from a healthcare professional, preferably a neurologist or an orthopedic specialist. They may recommend imaging studies, such as an MRI or ultrasound, to assess for any nerve damage or hematoma that may not have fully resolved.

2. Physical Therapy: Engaging in physical therapy can help improve mobility and strength in the affected area. Therapists can also provide exercises to promote nerve healing and reduce discomfort.

3. Pain Management: If pain persists, a healthcare provider may recommend medications such as nonsteroidal anti-inflammatory drugs (NSAIDs) or other pain relief options. In some cases, nerve blocks or corticosteroid injections may be considered to alleviate pain and inflammation.

4. Monitoring and Follow-Up: Regular follow-up appointments are essential to monitor the recovery process. If there is no improvement in sensation or if symptoms worsen, further interventions may be necessary.

5. Surgical Intervention: In cases where there is significant nerve damage or compression, surgical intervention may be required to relieve pressure on the nerves or to repair damaged nerves.

Prognosis
The prognosis for recovery of sensation after nerve injury can vary widely depending on the severity of the injury and the specific nerves involved. Some individuals may experience a gradual return of sensation over time, while others may have persistent numbness or altered sensation. It is essential to remain proactive in seeking medical advice and treatment to optimize recovery.

In summary, loss of sensation following a car accident can be attributed to various factors, including nerve injury, hematoma formation, and scar tissue development. A comprehensive evaluation by a medical professional is crucial for determining the underlying cause and appropriate treatment. With timely intervention and rehabilitation, many individuals can achieve significant improvement in their symptoms.

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