1 / 10Sometimes biting the lip can seem like a normal habit. But it's not as easy as it seems. This habit can cause many serious illnesses. Experts have warned that the act of biting the lip can be associated with diseases related to the mouth.2 / 10Experts of American brand Colgate explained the reason behind the lip bite. Why do people fall prey to the habit of biting their lips? There are five main reasons for this.3 / 10It is a common cause of temporomandibular joint disorder. Symptoms can range from mild to severe. They can also be extremely dangerous. Which may be due to rheumatoid arthritis.4 / 10Depending on the type of arthritis, changing the shape of your jaw, swelling can cause problems. Experts say that in addition to biting your lip, if you have pain in your jaw, teeth or headaches, these may be symptoms of arthritis of the jaw.5 / 10Teething can increase the risk of TMJ. Stress can also be a cause of tooth decay. This is more likely to happen when you sleep.6 / 10When a person's teeth are crazy, the problem of biting the lips arises. Even if it is not a serious illness, it is advisable to consult a doctor if it causes toothache or lip pain.7 / 10Depression can also cause problems with biting the lips or teeth. Repetitive behavior of the body is a part of mental illness which includes biting teeth or lips.8 / 10According to experts, biting the lips is not a big problem but biting the lips can cause inflammation of the lips as well as skin problems. Also this is a bad habit.9 / 10According to experts, if your child or you are suffering from lip bite problem, you should see a dentist immediately. Only then you can properly treat this problem.10 / 10If you have TMJ, doctors can advise you on everything from diet plans to home remedies such as eating soft foods. Medications can also be given if there is swelling.