The endoscopy is referred to as an OGD,
oesophagoscopy, gastroscopy and duodenoscopy.
The scope is slender, quite innocuous really, and it's
entirely painless. A bit of gagging discomfort at first, for
about 5 seconds, then tra-la-la. Personally, have had 2 OGDs without sedation . Can't think what all the fuss is
about.
Common findings are hiatus hernia, peptic ulceration,
pyloric stenosis, oesophagitis or gastritis, but it is also
used to rule out rarer conditions too.
The alternative to OGD is a Barium Meal, a protracted
business involving X-Rays. My advice : have the OGD
and quit worrying - it's easy, rapid,and you can drive
home to a good meal immediately.