Differential Diagnosis for Smelly Umbilical Cord
Single Most Likely Diagnosis
- Omphalitis: This is an infection of the umbilical cord stump, which can cause a foul odor. It's a common issue in newborns, especially if the cord is not kept clean and dry.
Other Likely Diagnoses
- Umbilical Granuloma: This condition occurs when there is an overgrowth of tissue at the base of the umbilical cord, which can become infected and cause a bad smell.
- Umbilical Hernia with Infection: Although less common, an umbilical hernia that becomes infected can also cause a foul odor from the umbilical area.
Do Not Miss Diagnoses
- Necrotizing Fasciitis: A severe infection that can start from the umbilical cord and spread to the surrounding tissue. It's rare but life-threatening and requires immediate medical attention.
- Gas Gangrene: Another severe infection that can cause tissue death and is characterized by a foul odor. It's rare in the context of an umbilical cord but would be catastrophic if missed.
Rare Diagnoses
- Congenital Malformations Involving the Umbilicus: Certain rare congenital conditions can affect the umbilical cord or surrounding area, potentially leading to infections or other issues that might cause a bad smell.
- Allergic Reaction or Contact Dermatitis: Although rare, an allergic reaction to products used on the umbilical cord or contact dermatitis could potentially cause irritation and a foul odor.