PTAN stands for Provider Transaction Access Number (medicare reimbursements). Suggest new definition. This definition appears frequently and is found in the following Acronym Finder categories: 1  Military and Government. 2  Science, medicine, engineering, etc.
Adrenaline also makes the blood vessels dilate in order to improve blood flow and oxygen delivery in case the body has to suddenly flee a dangerous situation. The veins in the face, as well as in the stomach lining and throughout the rest of the body, then have more blood than normal flowing through them, and they appear red. More about blushing: A surgery known as endothoracic sympathectomy can potentially eliminate blushing by snipping the small nerves located in the spine that trigger the response.
Sometimes color changes in the mouth are a sign of a bodywide disease: 1  Anemia may cause the lining of the mouth to be pale instead of the normal healthy reddish pink. 2  Measles, a viral disease, can cause spots to form inside the cheeks. 3  Addison disease and cancer (such as malignant melanoma) can cause dark color changes.