What Diseases Can Cause Bad Body Odor?

Several diseases and medical conditions can lead to bad body odor (also known as bromhidrosis or malodor). The underlying cause of the odor can vary depending on the condition. Some of the diseases and conditions associated with bad body odor include:

  • Trimethylaminuria (Fish Odor Syndrome): This is a genetic disorder that affects the body’s ability to break down trimethylamine, resulting in a fish-like odor, which can be present in sweat, urine, and breath.
  • Hyperhidrosis: Excessive sweating, especially in the armpits, groin, and feet, can lead to bad body odor due to the interaction of sweat with bacteria on the skin.
  • Diabetes: People with diabetes may have a sweet or fruity-smelling odor due to the presence of ketones in their breath and sweat, particularly when blood sugar levels are not well-controlled.
  • Kidney Disease: Kidney failure can cause a buildup of waste products in the body, leading to a distinct ammonia-like odor in the breath and sweat.
  • Liver Disease: Certain liver disorders can result in foul-smelling breath and body odor due to the accumulation of toxins in the body.
  • Thyroid Disorders: An underactive thyroid (hypothyroidism) can cause the body’s metabolic rate to slow down, leading to a buildup of certain substances that contribute to body odor.
  • Gastrointestinal Disorders: Conditions like gastroesophageal reflux disease (GERD) or other digestive issues can sometimes cause a sour or unpleasant smell in the breath.
  • Infections: Certain bacterial or fungal infections on the skin can produce a strong and offensive odor.
  • Metabolic Disorders: Various metabolic disorders can lead to abnormal breakdown products in the body, which may contribute to bad body odor.
  • Rare Genetic Conditions: Some rare genetic conditions can lead to specific body odors due to abnormal metabolic processes.

It’s important to note that bad body odor can also be influenced by factors such as diet, hygiene practices, and the use of certain medications or substances. If you or someone you know is experiencing persistent and concerning body odor, it’s essential to consult a healthcare professional for a proper evaluation and diagnosis.