What are common symptoms of lactose intolerance and wheat intolerance/sensitivity (not celiac)? can either of these problems start in adulthood?

Diarrhea, cramps ...: The common symptoms of lactose intolerance and wheat intolerance would be diarrhea and abdominal cramps, and blotting. Lactose intolerance induces the symptoms starting a few hours after ingestion. Wheat intolerance is a vague term, in the absence of wheat allergy (lack of ige to wheat), can present similarly, while wheat allergy can induce symptoms of anaphylaxis with a rapid onset of symptoms.

Varies: Lactose intolerance causes abdominal pain, cramping and bloating; symptoms may begin at 1 hour, typically later. More common in adults than children. Most people can tolerate yogurt. Wheat intolerance is hotly debated, but symptoms may be similar and can resolve with avoidance. Wheat allergy can cause severe allergic reactions, also diarrhea, cramping and bloating usually begins in childhood.