White Pimple Inside Cheek. Oral cysts may also cause tiny painless bumps inside the cheek on the inner lower lip or on gums says Simple Steps to Better Dental Health. These fluid-filled sac is painless.

Mucous cysts are caused by some damage to a salivary duct which may occur if you have accidentally sucked your lips hard between your teeth. Of canker sores are not known. Triggers of oral lichen planus might include liver disease hepatitis C infection particular medications and vaccines and allergies.
The sores can be found on the gums tongue inside the cheeks or along the lips.
Tech Insider tells you all you need to know about. This leads to something like you are describing. While the exact cause. They often appear on the face neck or scalp but can also develop on the shoulders or back.