A bone protrudes from the back of the cat's head. As long as it does not affect normal life, it is generally not a big problem. Most cats have protruding bones in different parts of the back of the head. In this regard, the owner can try to heat the cat with a towel to make the cat swell.
If the protruding part of the cat's back is red and swollen, it may indicate lymph, which is usually caused by inflammation of the cat. During this period, pay attention to applying anti-inflammatory drugs to cats, and it will gradually recover in about half a month to a month.
The protrusion on the back of the cat's head may be lipoma, or it may spread to other parts of the cat. Therefore, it is best to take the cat to a doctor for examination and use drugs or other treatments correctly under the guidance of the doctor.