- A lingering, often unpleasant taste even though you have nothing in your mouth. This is called phantom taste perception
- A reduced ability to taste sweet, sour, bitter, salty, and umami (savory), a condition called hypogeusia
Loss or taste and smell: A normal part of aging?
- An inability to detect any taste at all, which is called ageusia. True taste loss, however, is rare. Most often, people are experiencing a loss of smell instead of a loss of taste.
- Tastes that are distorted. Dysgeusia is a condition in which a foul, salty, rancid, or metallic taste sensation will persist in the mouth
Metallic taste in mouth: A cause for concern?
- A painful burning sensation in your mouth called burning mouth syndrome
Guide to burning mouth syndrome
- Upper respiratory and middle ear infections
- Radiation therapy for cancers of the head and neck
- Exposure to certain chemicals, such as insecticides and some medications, including some common antibiotics and antihistamines
- Head injury
- Some surgeries to the ear, nose, and throat (e.g., third molar—wisdom tooth—extraction and middle ear surgery)
- Poor oral hygiene and dental problems
- A physical examination of your ears, nose, and throat
- A dental examination
- An assessment of oral hygiene
- A review of your health history
- A taste test supervised by a health care professional