If you have pimples inside your lips, they could be caused by cold sores, which include canker sores, mucous cysts, oral lichen planus and inflamed papillae. You will generally feel pimple like bump on inside mouth. They do affect toddlers, teenagers or even adults. In terms of location, these pimples can be on the surface … Continue reading Bumps on inner Lip Causes: Remedy, Treatment