Uremic fetor is a urine-like odor on the breath of people with uremia. The odor occurs from the smell of ammonia, which is created in the saliva as a breakdown product of urea. Uremic fetor is usually associated with an unpleasant metallic taste (dysgeusia) and can be a symptom of chronic kidney disease.
When the excess urea in your body reacts with saliva, it forms ammonia–which you then exhale through your breath. If you have CKD, this is what gives your breath that ammonia scent. The medical name for this is “uremic fetor”.
It is often called ammonia breath. The buildup of waste in the blood, uremia, can lead to halitosis. Some patients have cited that it can smell like fish or even urine.
Kidney disease causes chemicals in urine to become concentrated and to cause a smell resembling ammonia. Kidney dysfunction can also cause high bacteria and protein levels in the urine, which will contribute to a foul ammonia smell.
As your kidney function declines, waste builds up in your blood, this is called uremia. Uremia can lead to a metal-like taste in your mouth and bad breath. It may also lead to a loss of appetite, as foods can change in taste. This altered, metallic taste is medically known as dysgeusia.
Patients with uremia typically complain of nausea, vomiting, fatigue, anorexia, weight loss, muscle cramps, pruritus, or changes in mental status. The clinical presentation of uremia can be explained by the metabolic disturbances associated with the condition.
Severely ill patients often have characteristic smells. Patients with diabetic ketoacidosis have the fruity smell of ketones, although a substantial number of people are unable to detect this. Foetor hepaticus is a feature of severe liver disease; a sweet and musty smell both on the breath and in urine.
High ketone levels cause your blood to become acidic and your body odor to be fruity. In the case of liver or kidney disease, your odor may give off a bleach-like smell due to toxin buildup in your body.
Uremic fetor is a urine-like odor on the breath of people with uremia. The odor occurs from the smell of ammonia, which is created in the saliva as a breakdown product of urea. Uremic fetor is usually associated with an unpleasant metallic taste (dysgeusia) and can be a symptom of chronic kidney disease.
Liver disease or kidney disease: When your liver and kidneys are working properly, they filter toxins out of your body. But in people with liver or kidney disease, these toxic substances aren't being cleared out. This can result in halitosis.
a smell of ketones on your breath, which can smell like pear drops or nail varnish remover. confusion. drowsiness or loss of consciousness (coma)
GERD, or gastroesophageal reflux disease, can cause a person's breath to smell like feces because the stomach acid backs up into the esophagus. This acidic wash irritates the esophagus, which can cause extreme discomfort as well as foul breath.
When your kidneys are failing, a high concentration and accumulation of substances lead to brown, red, or purple urine. Studies suggest the urine color is due to abnormal protein or sugar as well as high numbers of cellular casts and red and white blood cells.
Certain foods react in the body to produce ammonia and its byproducts, which have odors resembling that of urine. This is common in people who consume a high-protein or ketogenic diet. A high intake of specific foods such as onions and garlic can also lead to bad breath.
Smelling of the breath is common after having certain food or in the morning, but with people suffering from fatty liver conditions, it remains throughout the day. The breath may have a distinct sulfur and musty smell throughout the day. It is an obvious sign of fatty liver disease and should not be ignored.
One of the peculiar symptoms of the fatty liver disease is having "breath of the dead". Also known as Fetor hepaticus, the breath of the dead is a chronic odour in your breath and can be easily distinguished from your normal breath.
Substances that cause fetor hepaticus
Trimethylamine is also increased in many patients with cirrhosis and may contribute to the odor of the breath.
In Stage 3 CKD, your kidneys have mild to moderate damage, and they are less able to filter waste and fluid out of your blood. This waste can build up in your body and begin to harm other areas, such as to cause high blood pressure, anemia and problems with your bones. This buildup of waste is called uremia.
Uremia usually develops only after the creatinine clearance falls to less than 10 mL/min, although some patients may be symptomatic at higher clearance levels, especially if renal failure develops acutely. The syndrome may be heralded by the clinical onset of the following symptoms: Nausea. Vomiting.