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Taste - impaired

 

Definition

Taste impairment means there is a problem with your sense of taste. Problems range from distorted taste to a complete loss of the sense of taste. However, a complete inability to taste is rare.

Alternative Names

Loss of taste; Metallic taste; Dysgeusia

Common Causes
Home Care

Follow prescribed therapy, which may include a change or changes to the diet. For taste problems due to the common cold or flu, normal taste should return when the illness passes. For smokers, stop smoking.

Call your health care provider if

Make an appointment with your doctor if your taste problems do not go away, or if abnormal tastes occur with other symptoms.

What to expect at your health care provider's office

The doctor will perform a physical examination and ask questions, including:

  • Do all foods and drinks taste the same?
  • Do you smoke?
  • Does this change in taste affect the ability to eat normally?
  • Have you noticed any problems with your sense of smell?
  • Have you recently changed toothpaste or mouthwash?
  • How long has the taste problem lasted?
  • Have you been sick or injured recently?
  • What medicines do you take?
  • What other symptoms do you have? (For example, appetite loss or breathing problems?)
  • When is the last time you went to the dentist?

If the taste problem is due to allergies or sinusitis, the doctor may give you medicine to relieve the stuffy nose. If a medicine you are taking is to blame, your doctor may recommend that you change your dose or switch to a different drug.

A CT scan may be done to look at the sinuses or the part of the brain that controls the sense of smell.

Considerations

The tongue can detect only sweet, salty, sour, and bitter tastes. Much of what is perceived as "taste" is actually smell. People who have taste problems often have a smell disorder that can make it hard to identify a food's flavor. (Flavor is a combination of taste and smell.)

Taste problems can be caused by anything that interrupts the transfer of taste sensations to the brain, or by conditions that affect the way the brain interprets these sensations.

Tasting
References

Wrobel BB. Clinical assessment of patients with smell and taste disorders. Otolaryngol Clin North Am. Dec 2004; 37(6):1127-42.

Doty RL. Effects of drugs on olfaction and taste. Otolaryngol Clin North Am. Dec 2004; 37(6):1229-54.


Review Date: 3/3/2009
Reviewed By: James L. Demetroulakos, MD, FACS, Department of Otolaryngology, North Shore Medical Center, Salem, MA. Clinical Instructor in Otology and Laryngology, Harvard Medical School. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
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