👉 Periphacitis is a term used in medicine to describe inflammation of the lining of the stomach. This condition can occur due to various factors such as stress, infection, or certain medications. It can cause pain and discomfort in the upper abdomen, chest, neck, back, and arms. In severe cases, it may lead to nausea, vomiting, and difficulty swallowing. Treatment may include medication, diet changes, and lifestyle modifications.