Is Babinski sign positive in amyotrophic lateral sclerosis (ALS)?

Is Babinski sign positive in amyotrophic lateral sclerosis (ALS)?

Is Babinski sign positive in amyotrophic lateral sclerosis (ALS)?

Correct answer is C. The Babinski sign is a neurological cue observed during the Plantar Reflex test. Normally, when the sole of the foot is stimulated, the toes flex downward. However, in a positive Babinski sign, the big toe (Hallux) extends upward (dorsiflexion) instead of flexing downward. In adults, the presence of a Babinski sign can be indicative of an upper motor neuron (UMN) lesion. ALS is a combination of both upper and lower motor neuron signs, and while a positive Babinski sign is suggestive of UMN involvement, it is not a universal finding in ALS. Bulbar-onset ALS, a subtype of ALS, may not exhibit a Babinski sign. This subtype primarily affects the bulbar region (brainstem), leading to symptoms related to speech, swallowing, and facial muscles. In summary, while a positive Babinski sign can occur in ALS, its absence does not rule out the diagnosis. Clinical evaluation, other signs, and additional tests are crucial for diagnosing ALS.

Verifiziert von Dr. Petya Stefanova

Teilen: