What is the reason for the painless, itchy bumps on the inside of the mouth?

Cheek bumps on the inner wall of the mouth are painless and itchy may be due to seborrhea, chewing friction irritation or papilloma.
1. Lipidosis refers to the ectopic appearance of sebaceous glands in other locations, mostly yellowish, when multiple sebaceous glands are fused can be manifested as raised tissues, the disease can be seen in any part of the oral mucosa, but also can be seen in the genitals; the disease is not uncomfortable, so there is no need for treatment.
2. A horizontal white line can be seen on the mucosa opposite to the occlusal line on the inner wall of the mouth, which is the buccal white line, and is a physiological phenomenon, mostly caused by the friction of mastication; however, when the bite is abnormal, the chewing movement will overstimulate the mucous membrane in the position of the buccal white line, which will result in the excessive proliferation of the mucous membrane. In this case, it can be removed by surgery, and orthodontic treatment is also needed to restore normal occlusion.
3. Papilloma can also occur in the mucosa of the inner wall of the oral cavity, mainly due to mucosal hyperplasia caused by the mucosa above the mucosal surface of the pimple, belongs to a kind of small benign tumors, generally no pain and other obvious symptoms; can be removed through surgery and other ways.
Warm reminder: the oral mucosa appear bumps best timely consultation, identify the cause of the disease and then give the appropriate treatment.