Can lactose intolerance cause hemroids?

Can't digest lactose: A normal person eating a healthy diet including dairy products can get flatulence or bloating. One reason is excess fiber. Since humans don't digest the fiber, intestinal bacteria will feed on it and make gas as a byproduct. Another reason is lactose intolerance, in which one can't digest the lactose (milk sugar) he eats. Again, bacteria will feed on it. Gas can build up, causing bloating.

Not directly: If the lactose intolerance is causing frequent bowel movements, the prolonged time sitting on the potty and straining may lead to hemorrhoids.

Indirectly: Lactose intolerance can cause loose and/or frequent stools which can cause development and irritation of hemorrhoids.