Is heartburn always caused by acid reflux?

The feeling of heartburn is not always caused by a rise in stomach acid. Some disorders also cause this constant burning feeling: these are functiona1

Is dysphagia the same as achalasia?

They can be confused, but dysphagia is a symptom of a number of different diseases; one of those is achalasia, where it is one of the main symptoms.

What does a colonoscopy consist of?

A colonoscopy is the diagnostic test for the detection of colorectal cancer, and is recommended for the population over 50 years of age.