• Home

Home > Medical Reference > Encyclopedia (English)

Toggle: English / Spanish

Taste - impaired

• Overview
• Treatment

Definition:

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

Alternative Names:

Loss of taste; Metallic taste; Dysgeusia

Considerations:

The tongue can detect only sweet, salty, sour, and bitter tastes. Much of what is perceived as "taste" is actually smell. Persons 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 theses sensations.

Common Causes:

• Aging (the number of taste buds decrease with age)
• Bell's palsy
• Common cold
• Flu
• Gingivitis
• Heavy smoking (especially pipe smoking)
• Injury to the mouth, nose, or head
• Mouth dryness
• Nasal infection, nasal polyps, sinusitis
• Pharyngitis
• Salivary gland infections
• Side effects of medicines, including antithyroid drugs, captopril, griseofulvin, lithium, penicillamine, procarbazine, rifampin, vinblastine, and vincristine
• Sjogren syndrome
• Strep throat
• Vitamin B-12 or zinc deficiency

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: 2/12/2007
• Reviewed By: Alden J. Pearl, M.D., Clinical Assistant Professor, Department of Otolaryngology, State University of New York Health Science Center at Brooklyn, Brooklyn, NY. Review provided by VeriMed Healthcare Network.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org). URAC's accreditation program is the first of its kind, requiring compliance with 53 standards of quality and accountability, verified by independent audit. A.D.A.M. is among the first to achieve this important distinction for online health information and services. Learn more about A.D.A.M.'s editorial process . A.D.A.M. is also a founding member of Hi-Ethics (www.hiethics.com) and subscribes to the principles of the Health on the Net Foundation (www.hon.ch).

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. Copyright 1997-2007 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.