Hi Thanks for posting your query on HCM. I appreciate your concern for the swelling below the right ear. The features described in your case are suggestive of involvement of parotid salivary gland more precisely the obstruction of the salivary (parotid) duct. The fact that swelling is progressively increasing as the day passes or after taking some fruits like Tangerine, there is a possibility of salivary stones which can block the flow of saliva. When saliva can t exit through the ducts it gets accumulated in the gland causing pain and swelling. You are advised to visit a surgeon for proper evaluation and possible manual removal of stones, warm compresses, or sour candies to increase the flow of saliva. Surgery may be required to remove the blockage and/or the affected gland. Hope the suggestions made above could be of great help to you. Kindly give your valuable feed back.