An infant with chronic, relapsing polyneuropathy responsive to steroids

Area of Science:

• Neurology
• Pediatrics
• Immunology

Background:

• Acute flaccid paraparesis in infants is a critical diagnostic challenge.
• Chronic inflammatory demyelinating polyneuropathy (CIDP) is typically diagnosed in adults.
• Early-onset neuropathies require thorough investigation due to potential for severe morbidity.

Observation:

• A seven-week-old infant presented with acute flaccid paraparesis.
• The infant experienced recurrent episodes of weakness and neurological decline.
• Minor illnesses triggered exacerbations, while corticosteroid therapy induced remissions.

Findings:

• Postmortem examination confirmed a chronic inflammatory polyradiculopathy.
• This case represents the youngest documented patient with this condition.
• The polyneuropathy demonstrated a relapsing-remitting course responsive to steroids.

Implications:

• This case expands the known age spectrum for chronic, relapsing, steroid-responsive polyneuropathies.
• Early diagnosis and management of pediatric polyneuropathies are crucial.
• Further research into the pathogenesis and treatment of early-onset inflammatory neuropathies is warranted.