Acute renal failure in McArdle's disease

Area of Science:

• Neurology
• Nephrology
• Metabolic Myopathies

Background:

• McArdle's disease is a rare genetic disorder affecting muscle energy metabolism.
• It results from a deficiency in the enzyme myophosphorylase.
• This deficiency leads to impaired glycogen breakdown in muscles.

Observation:

• A 45-year-old male presented with acute renal failure requiring dialysis.
• No clear precipitating factor for the renal failure was identified initially.
• The patient had a history consistent with McArdle's disease.

Findings:

• The patient's acute renal failure was diagnosed as rhabdomyolysis.
• Rhabdomyolysis was confirmed to be secondary to McArdle's disease.
• Myophosphorylase deficiency was identified as the underlying cause.

Implications:

• This case highlights a potential severe complication of McArdle's disease.
• Early recognition of rhabdomyolysis in McArdle's disease is crucial for timely intervention.
• Understanding the link between metabolic myopathies and renal failure can improve patient management.