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Mucocele or mucous cyst is a fluid-filled swelling that develops on the mouth or the lip. Almost all of us, more than once in our life, have had developed a bump or a lump on the lips. The harmless cyst, a soft swelling on your lips or mouth can be bothersome in some cases  . The cyst develops as a result of your salivary gland becoming plugged with mucus.
Usually, it develops on the lower lip; however, it can also appear anywhere in your mouth. They are usually painless and not severe, however, lack of timely treatment can result in the cyst becoming permanent. Mucocele is commonly found in people between the ages of 10 to 25  . But that does not state that the people of other age will not develop it. The cysts affect men and women equally  .
Causes Of Mucocele
The swelling with pus develops as a result of oral cavity trauma. The saliva passes to your mouth from your salivary gland through tiny tubes (ducts). In the event of any damage or blockage in the ducts, mucocele develops as the saliva does not have the ease of moving from the duct to your mouth and results in mucous build-up  .
The causes of mucocele are as follows  :
- Lip biting or cheek biting
- Adjacent teeth causing chronic damage
- Cheek biting
- Accidental rupture of a salivary gland
- Poor dental hygiene
- Reaction to tartar-control toothpaste
Apart from the above-mentioned causes, one can develop mucocele as a result of lip biting induced by stress. Stress is one of the highest risks associated with mucous cysts  .
Symptoms Of Mucocele
The signs of the swelling vary in accordance with the depth of the cyst; that is, how deep the cyst is within the skin and the interval of its occurrence. They can appear near the surface of the skin or deep within the skin  .
Symptoms of cysts deeper within the skin are as follows  :
- Round in shape
- Has a white colour
Symptoms of cysts near the surface of the skin are as follows  :
- Raised swelling
- Bluish colour
- Lesions less than 1 centimetre in diameter
When To See A Doctor
Although you may think that a mucocele will go away like a mouth ulcer, it is critical that you go to a doctor for any cyst that appears in or around your mouth. You must go to the doctor immediately if 
- the cysts become large and uncomfortable,
- there is a pain, and
- it stays on for a period longer than a month.
Diagnosis Of Mucocele
In order to examine the root cause of the cyst, your doctor will ask you about your habits such as nail biting, lip biting, and cheek biting  .
A biopsy of the cysts is most likely required so as to make an efficient and proper diagnosis. The biopsy will be comprised of your doctor removes a small tissue from around the affected area as a sample. On examining the tissue, the doctor will be able to understand if the cyst is cancerous or not.
A biopsy will be required when 
- the appearance of the cysts suggests adenoma (cancer) or lipoma,
- the mucous cyst is larger than 2 centimetres, and
- there is no history of trauma.
Treatments For Mucocele
Most mucous cysts go away with time, without any treatment. However, some cysts can enlarge and cause discomfort. These type of mucoceles require treatment because the infection has spread. Treatment for mucocele depends on the severity of the cyst because most heal without the need for any medical attention. Do not try to open or remove the cysts at home as it will not prevent the infection and will cause tissue damage  .
- Laser therapy: The treatment uses a small beam of light which is directed, to remove the cyst.
- Intralesional corticosteroid injection: Under this method, a steroid will be injected into the cyst, so as to reduce the inflammation and speed up the healing process.
- Cryotherapy: Under this treatment, the cyst will be removed by freezing its tissues.
Surgical removal of the cyst can be recommended in some cases where the mucocele is severe. The surgery may remove the cyst alone or the complete salivary gland to prevent mucocele from recurring  .
Once the therapies and surgeries are carried out, it may take up to a week to two years for the cysts to heal - depending on the severity and the type of the cyst.
Home Remedies For Mucocele
- Warm salt water can help speed up the healing process of the cysts  .
- Avoid biting your cheek and lips constantly.
- Identify the trigger for lip biting habits and find ways to deal with it.
- In the case of stress-induced lip biting, try yoga or meditation to cure anxiety and stress.
- Chewing on sugarless gum to avoid biting your lips and mouth.
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