Over time, if untreated, acid reflux leads to inflammation (esophagitis) and difficulty in swallowing that can cause a partial closing of the lower esophagus (stricture).
NGOs have been told that they can't host events with more than 10 people, a stricture that extends even to annual charity fund raisers for the Persian New Year.
For instance, for history it says pupils should understand the emergence of an independent United States and its constitution - accompanied with a stricture to respect its ethnic and cultural diversity.