ALS is best described as?

ALS is best described as?

• A. A purely sensory neuropathy.
• B. A condition causing cognitive decline without motor loss.
• C. The most common motor neuron disease, causing loss of voluntary muscle control.
• D. An acute infection of the nervous system.

Answer: (C)

ALS is a neurodegenerative disease that targets motor neurons, the nerve cells that control voluntary muscles. In ALS, both upper motor neurons in the brain and lower motor neurons in the spinal cord and brainstem deteriorate, so signals from the brain can’t reach the muscles. This leads to progressive weakness and wasting of voluntary muscles, fasciculations (twitching), and later difficulties with speaking, swallowing, and breathing. It is the most common motor neuron disease in adults, which is why the description emphasizes being a motor neuron disease with loss of voluntary muscle control. It’s not a purely sensory neuropathy, nor primarily a cognitive decline without motor loss, and it isn’t an acute nervous system infection.

ALS is a neurodegenerative disease that targets motor neurons, the nerve cells that control voluntary muscles. In ALS, both upper motor neurons in the brain and lower motor neurons in the spinal cord and brainstem deteriorate, so signals from the brain can’t reach the muscles. This leads to progressive weakness and wasting of voluntary muscles, fasciculations (twitching), and later difficulties with speaking, swallowing, and breathing. It is the most common motor neuron disease in adults, which is why the description emphasizes being a motor neuron disease with loss of voluntary muscle control. It’s not a purely sensory neuropathy, nor primarily a cognitive decline without motor loss, and it isn’t an acute nervous system infection.