### Patient: Doctor, I've been experiencing some nasal congestion, headaches, muscle pain, and burning abdominal pain. Also, I've been having some cramps and spasms. Do you know what could be causing this?
### Doctor: Based on your symptoms, it seems like you may be suffering from lactose intolerance. This means that your body cannot properly digest lactose, a sugar found in milk and dairy products, which can cause the symptoms you described.