What causes a metallic taste in the mouth?

Answer

A metallic taste in the mouth generally occurs as a side effect of medications, states Melissa Conrad Stoppler on MedicineNet. It is also caused by a nerve disorder called dysgeusia and several other conditions.

Stoppler explains that numerous medications trigger an altered sense of taste as a side effect, and these often include the perception of a metallic taste. Antibiotics, antihistamines and chemotherapy medications sometimes cause a temporary metallic taste in the mouth as a side effect. The condition usually resolves after stopping the medication.

Stoppler also discusses a metallic taste due to dysgeusia, a disorder of the nerves that control taste sensations. This condition causes different taste alterations, including a metallic taste. Head injury, upper respiratory infections and radiation therapy are also common causes.

HowStuffWorks explains that dysgeusia also commonly results from hormonal changes in the body during the first trimester of pregnancy. The metallic taste typically disappears when hormones stabilize in the second trimester. A person is also likely to notice a metallic taste if his sense of smell has been impaired, especially due to a nasal infection, runny nose, sinusitis or cold. Moreover, unhealthy practices such as smoking and poor dental hygiene sometimes lead to this condition.

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1 Additional Answer
Ask.com Answer for: what causes a metallic taste in mouth
Impaired Taste
Impaired taste can refer to the absence of taste or an altered sense, such as a metallic taste in the mouth. Most people experience impaired taste on a temporary and partial basis. Causes of impaired taste range from the common cold to respiratory problems or more serious medical conditions involving the central nervous system. Impaired taste can also be a sign of normal aging. More »
Source: healthline.com
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