Treatment, Diagnosis and Next Steps 

If you feel you might be lactose intolerant, it's a good idea to make an appointment with a doctor to get a clear diagnosis. Before you go, be prepared for your time with the doctor by writing down a list of the symptoms you're experiencing and a list of medications you currently take. 

Keeping a food diary for several days and writing everything you eat and how you feel afterward can help a doctor more accurately diagnose the cause of your symptoms and whether it is indeed lactose intolerance. Think of questions you might like to ask the doctor about your condition, and be sure to check to see if there is anything you need to do before the appointment, such as restricting what you eat.