If You Have Hard Bumps On The Roof Of Your Mouth, This Is Exactly What It Means

Another common type of localized swelling in the mouth is a cyst. These can develop when you bite the interior of your lower lip by mistake – for example when eating. This can cause the saliva gland to block, which leads to a build-up of saliva under the skin that can develop a fibrous coating and create what’s known as a pseudocyst.