Acute Sensory-Motor Axonal Neuropathy in a 57-Year-Old Male Presenting With Paresthesia and Distal Muscle Weakness.

Guillain-Barré syndrome (GBS) is a relatively uncommon post-infectious, immune-mediated neurologic disorder with an incidence of 0.5-2/100,000. It is usually preceded by an infection that evokes an immune response that cross-reacts with peripheral nerve components via molecular mimicry. The presentation of this disorder has several forms, including acute inflammatory demyelinating polyneuropathy (AIDP), acute motor axonal neuropathy (AMAN), acute motor-sensory axonal neuropathy (AMSAN), and Miller Fisher syndrome (MFS). The case we describe is of a 57-year-old male presenting with sensory features followed by symmetrical ascending paralysis and diagnosed with ASMAN, a recently described subtype of GBS, based on neurological and laboratory findings.