Lactic acidosis symptoms
Pro Research Analysisby 
Searched over 200M research papers
Common Symptoms of Lactic Acidosis
Lactic acidosis is a serious metabolic condition marked by the buildup of lactic acid in the body, leading to a high anion gap metabolic acidosis. The most common symptoms include nausea, vomiting, abdominal pain, diarrhea, fatigue, weakness, and confusion. Patients may also experience rapid breathing (Kussmaul breathing), breathlessness, and, in severe cases, hypotension and respiratory failure. These symptoms can develop gradually or suddenly, depending on the underlying cause and severity of the acidosis 2689+1 MORE.
Neurological Symptoms in D-Lactic Acidosis
D-lactic acidosis, often seen in patients with short bowel syndrome or after certain gastrointestinal surgeries, is particularly associated with neurological symptoms. These can include confusion, delirium, slurred speech (dysarthria), ataxia (unsteady gait), visual disturbances, headache, changes in mood or affect, and even transient blindness. Patients may appear as if they are intoxicated or "drunk." In some cases, more severe symptoms like cranial nerve palsies and transient hypothalamic dysfunction have been reported. These neurological symptoms are often episodic and may be triggered by high-carbohydrate meals or certain antibiotics 1345+1 MORE.
Gastrointestinal and Systemic Manifestations
Gastrointestinal symptoms such as abdominal pain, bloating, gas, and diarrhea are common in both D-lactic and L-lactic acidosis. In D-lactic acidosis, these symptoms are often accompanied by "brain fogginess," which includes cognitive difficulties and mental clouding. These symptoms can be particularly pronounced in patients with small intestinal bacterial overgrowth (SIBO) or those consuming probiotics, as these factors can increase D-lactate production in the gut .
Severe and Rare Presentations
In rare cases, lactic acidosis can present with dramatic symptoms such as transient complete blindness, as reported in metformin-associated lactic acidosis (MALA). This can occur in patients with underlying kidney disease or those taking high doses of metformin. Other severe symptoms may include hypothermia, encephalopathy, and cardiovascular collapse, especially when blood lactate levels are extremely high 210.
Clinical Recognition and Diagnosis
The symptoms of lactic acidosis are often non-specific and can be mistaken for other conditions. Clinicians should suspect lactic acidosis in patients with unexplained metabolic acidosis, especially if they have risk factors such as diabetes, chronic kidney disease, recent gastrointestinal surgery, or are taking medications like metformin or nucleoside reverse transcriptase inhibitors. Neurological symptoms in the context of metabolic acidosis should prompt consideration of D-lactic acidosis, particularly in patients with altered gut anatomy or function 1346+1 MORE.
Conclusion
Lactic acidosis presents with a range of symptoms, from gastrointestinal upset and fatigue to severe neurological disturbances and, in rare cases, blindness. D-lactic acidosis is especially associated with episodic neurological symptoms and is often under-recognized. Early recognition of these symptoms and their underlying causes is crucial for prompt diagnosis and effective treatment.
Sources and full results
Most relevant research papers on this topic
Transient Complete Blindness Due to Metformin-Associated Lactic Acidosis (MALA) Reversed with Hemodialysis
Metformin-associated lactic acidosis (MALA) can cause dramatic symptoms, including blindness, and early recognition and treatment are crucial for patients with chronic kidney disease taking metformin for diabetes mellitus.
D-lactic acidosis.
D-lactic acidosis is a rare neurologic syndrome caused by malabsorbed carbohydrates fermented by abnormal bacterial flora in the colon, with potential factors contributing to neurologic symptoms.
DOI