the Babinski Reflex: What Your Foot Responses Mean

Regarding the reflection of the bottom?

Hello, doctor.
I often check the soles of my feet for atrophy (worried about amyotrophic lateral sclerosis), and I recently came across a neurological reflex test called the Babinski reflex.
I tried it myself while sitting with my feet bent (since I was doing it alone).
I used my fingernail to scratch the soles of my feet, but there didn't seem to be much response.
There were a few times when my big toe moved slightly forward, but I'm not sure if I'm overthinking my symptoms or if there is a real issue that requires a follow-up appointment.

Dàxuéshēng, 20~29 year old female. Ask Date: 2021/05/20

Dr. Hong Weibin reply Neurology

The correct method for performing the Babinski reflex test is to have someone else conduct it and observe the responses on both sides for comparison, as doing it oneself can easily lead to inaccuracies.

Reply Date: 2021/05/20

More Info

The Babinski reflex is a neurological test that assesses the integrity of the corticospinal tract, which is crucial for voluntary motor control. This reflex is typically tested by stroking the sole of the foot, starting from the heel and moving towards the toes. In a normal response for adults, the toes should curl downwards. However, in infants, the toes fan out, which is considered a normal response due to the immaturity of their nervous system.
When an adult exhibits a Babinski response, where the big toe extends upwards and the other toes fan out, it may indicate an upper motor neuron lesion. This could be due to various conditions, including multiple sclerosis, stroke, or spinal cord injuries. Conversely, a normal response does not necessarily rule out all neurological issues, especially if other symptoms are present.

In your case, performing the Babinski test on yourself may not yield accurate results, as the test is best conducted by a trained professional who can observe and compare responses from both feet. The position of your foot (bent and seated) could also affect the reflex response. If you are concerned about muscle atrophy or conditions like amyotrophic lateral sclerosis (ALS), it is essential to consult a healthcare professional for a comprehensive evaluation.

Your description of not observing a significant response during self-testing could be due to various factors, including the method of testing or the state of your nervous system. It's important to remember that self-diagnosis can often lead to unnecessary anxiety. If you have persistent concerns about muscle weakness, atrophy, or other neurological symptoms, it is advisable to seek a thorough examination from a neurologist. They may conduct additional tests, such as electromyography (EMG) or nerve conduction studies, to assess the function of your nerves and muscles more accurately.

In summary, while the Babinski reflex can provide valuable information about neurological function, it is crucial to have it assessed in a clinical setting for accurate interpretation. If you are experiencing symptoms that worry you, such as muscle weakness or changes in reflexes, do not hesitate to reach out to a healthcare provider for further evaluation and peace of mind.

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