Acute Inflammatory Demyelinating Polyneuropathy (AIDP)

Acute Inflammatory Demyelinating Polyneuropathy (AIDP) is a condition that affects the nervous system, specifically the nerves outside the brain and spinal cord. It causes the body's immune system to mistakenly attack the protective covering of the nerves, called the myelin sheath. This damage slows down or blocks nerve signals, leading to weakness, numbness, and sometimes paralysis. Symptoms usually start in the legs and can spread to the arms and upper body. The condition can progress quickly and may affect breathing muscles, making it a medical emergency. Recovery can take weeks to months, and some people may have lasting effects.

Acute Inflammatory Demyelinating Polyneuropathy (AIDP) is the most common form of Guillain-Barré syndrome, characterized by an autoimmune-mediated demyelination of peripheral nerves. It typically follows an infection, such as with Campylobacter jejuni, triggering an aberrant immune response against peripheral nerve myelin. The pathophysiology involves macrophage infiltration and T-cell activation leading to segmental demyelination and conduction block. Clinically, it presents with rapidly progressive, symmetric ascending weakness, areflexia, and sensory disturbances. The disease can cause respiratory failure due to diaphragmatic weakness and autonomic dysfunction. Early recognition is critical due to potential life-threatening complications.