MSUD

Medical abbreviation · Pediatric & Neonatal

MSUD
Stands forMaple syrup urine disease
CategoriesMedical

MSUD stands for Maple syrup urine disease, a pediatric & neonatal abbreviation.

Inherited disorder in which the body cannot break down the branched-chain amino acids leucine, isoleucine and valine, leading to toxic buildup, poor feeding, lethargy and seizures within days of birth. Urine and earwax may smell sweet like maple syrup.

Example: Newborn screen positive for MSUD, leucine elevated; urgent transfer to metabolic center.

Usage notes

MSUD is included in US newborn screening. It is especially common among Old Order Mennonites in Pennsylvania because of a founder mutation. Lifelong dietary restriction prevents crises, and liver transplantation can effectively cure it. Illness can trigger dangerous metabolic decompensation.

More pediatric & neonatal abbreviations

  • MAS – Meconium aspiration syndrome
  • MenACWY – Meningococcal conjugate vaccine (serogroups A, C, W and Y)
  • MenB – Meningococcal serogroup B vaccine
  • MIS-C – Multisystem inflammatory syndrome in children
  • MMR – Measles, mumps and rubella vaccine
  • MMRV – Measles, mumps, rubella and varicella vaccine
  • NAS – Neonatal abstinence syndrome
  • NBS – Newborn screening
  • NEC – Necrotizing enterocolitis
  • NOWS – Neonatal opioid withdrawal syndrome
  • OFC – Occipitofrontal circumference
  • PCV – Pneumococcal conjugate vaccine

See all 51 pediatric & neonatal abbreviations →

This entry is for general education and is not medical advice. Abbreviation use varies between institutions; always confirm in context.