What is a primary consequence of Acute Flaccid Myelitis (AFM)?

Acute Flaccid Myelitis (AFM) is a rare but serious neurological condition that primarily affects the spinal cord, leading to significant impacts on muscle strength and function. A primary consequence of AFM is limb weakness, which occurs because the condition involves inflammation of the spinal cord's anterior horn cells, where motor neurons reside. This inflammation disrupts the signals that are sent from the brain to the muscles, resulting in sudden onset weakness in the limbs.

Unlike other options, such as loss of vision, respiratory distress, or skin rashes, which are not direct consequences of AFM and can be attributed to other medical conditions, the hallmark of AFM is the specific presentation of muscle weakness, particularly in the arms and legs. This weakening can lead to difficulties with mobility and everyday activities and can vary in severity, impacting patients from mild weakness to complete paralysis. The characteristic flaccid paralysis associated with AFM emphasizes its specific impact on the motor pathways, confirming why limb weakness is recognized as the primary consequence of this condition.