Toxicity the presence of a virus,appendicitis,food poisoning,organic or systemic disease, toxicity leads to poor oxygen delivery in the body then bowel movements that are infrequent or hard to pass.
Piles Less SweatingThe gastritis could be the cause of your constipation. You should have lifestyle changes which will give you relief as medications are supportive in treatment. The gastritis can be controlled by antacids and the constipation can be controlled by laxatives.