Why would inside of mouth or lips discolor dark purple color?

There are a few possible reasons why the inside of your mouth or lips might discolor to a dark purple color. Some of these reasons include:

- Bruising: If you have recently experienced trauma or injury to your mouth or lips, such as biting your tongue or cheek, the area may bruise and appear purple.

- Bleeding: If you have a bleeding disorder or are taking blood thinners, you may be more likely to experience bruising and bleeding in your mouth or lips, which can cause a dark purple discoloration.

- Infection: Some infections, such as canker sores or herpetic stomatitis, can cause inflammation and discoloration of the inside of your mouth or lips.

- Medications: Certain medications, such as some chemotherapy drugs or antimalarial drugs, can cause temporary discoloration of the inside of the mouth or lips.

- Smoking: Smoking can cause the inside of the mouth and lips to become discolored due to the accumulation of tar and other chemicals.

- Addison's disease: This condition occurs when your body does not produce enough hormones called cortisol and aldosterone. One of the symptoms of Addison's disease is dark pigmentation of the skin and mucous membranes, including the inside of the mouth.

- Peutz-Jeghers syndrome: This is a rare genetic condition that causes dark pigmentation of the skin and mucous membranes, including the inside of the mouth. People with Peutz-Jeghers syndrome also develop polyps in the digestive tract.

- Melanoma: This is a type of skin cancer that can occur in the mouth. Melanomas can appear as dark, irregularly shaped patches on the skin or mucous membranes.

It is important to see a doctor or dentist if you are concerned about the dark purple discoloration of the inside of your mouth or lips, especially if it is accompanied by other symptoms such as pain, bleeding, or swelling. The doctor or dentist can determine the cause of the discoloration and recommend the appropriate treatment.