Laktózhánying

Laktózhánying is a term found in Hungarian-language sources that literally combines laktóz (lactose) and hánying (vomiting). It refers to a pattern in which ingestion of lactose-containing foods leads to vomiting. The term is not a standard clinical diagnosis in international guidelines, but it is used descriptively to denote a lactose-triggered emetic response that may occur with or without other lactose-related GI symptoms such as bloating, abdominal pain, or diarrhea.

Causes and differential diagnosis are important to consider. True lactose intolerance due to lactase deficiency can produce GI distress after dairy consumption, and in rare cases vomiting may occur, particularly in children. Vomiting after dairy exposure can also reflect cow milk protein allergy, especially in young children, or could be part of functional or conditioned vomiting. Other conditions, such as infections, gastroesophageal reflux, or other food intolerances, may create similar symptom patterns and should be ruled out.

Diagnosis typically relies on clinical history and observational approaches. A clinician may perform an elimination diet removing lactose-containing foods, followed by a controlled lactose challenge under supervision. Diagnostic tests for lactase deficiency, such as a hydrogen breath test or genetic testing, can support the underlying lactose intolerance, but vomiting is not specific to any single test.

Management focuses on symptom relief and dietary modification. This includes lactose avoidance or the use of lactose-free products, lactase enzyme supplements, and careful reintroduction under medical guidance. Ensuring adequate calcium and vitamin D intake is important, particularly in individuals with long-term dairy avoidance.