Anosmia Treatment

Malfunction of olfactory system in a human body leads to this medical condition - anosmia. In this condition, the person fails to distinguish a particular smell. This condition may be temporary or permanent. It can also differ in a way that a person is not able to perceive some specific smell. The most probable causes for loss of smell are nasal blockages and destruction of the inner mucus lining of nose.

Diagnostic Tests for Anosmia

The first stage of any treatment is identifying the cause and symptoms. The next step that follows is diagnosis with tests. If the anosmia is temporary, then it is most probably caused by sinus infections, influenza and common cold. But if anosmia prolongs for a longer duration of time, it can be due to nasal polyps (benign nasal tumors) or bone deformity in nose which is blocking the passage of air through nose. Serious medical concerns are posed only when the causes attribute to traumatic brain injuries, brain tumors, diabetes, pernicious anemia, Klinefelter syndrome, Alzheimer's disease, Kallmann's syndrome, Korsakoff's psychosis, multiple sclerosis and advanced aging. If the person is born without the ability to smell, the medical condition is termed as congenital anosmia, which is caused by genetic factors that run in the family line. Meningitis in infancy is also a strong reason for anosmia in children. Anosmia, if not diagnosed on time can lead to loss of smell and taste in the person.

Anosmia symptoms are diagnosed when the person becomes insensitive to odor. The condition is further confirmed if the person is not able to enjoy his food due to loss of smell, thereby suffering loss of appetite. Below listed are the widely used olfactory tests that are clinically tested to check for olfactory malfunction prior to anosmia treatment.

University of Pennsylvania Smell Identification Test (UPSIT): This test was first developed by Dr. Richard Doty. UPSIT is also widely known as the "Scratch and Sniff" Test. The test kit has about 40 standardized micro encapsulated stimuli/odorants for smell, which the patient can self test at home. This test has been successfully tried on over 200,000 patients suffering from anosmia.

Connecticut Chemosensory Test: This test requires a trained person to administer the smell test. Connecticut Chemosensory test contains a threshold test in which there are 11 plastic squeeze bottles of which 7 contain diluted butanol in deionized water in different concentrations. The other 4 bottles contain distilled water. Now when the smell test is carried out for the first time, the patient is given two bottles, one with butanol (most diluted version) and the other without butanol. Once the patient figures out the stronger smell, he proceeds to the next stage of testing where higher concentrated butanol and diluted butanol are used. The threshold of the patient is identified when he is able to smell the odor correctly in the first four times of the test. A score below 7 confirms anosmia. In the second stage of this test, 8 plastic jars are kept before the patient. All these jars contain a common odorant (ammonia or vicks) that serves as a stimulant for the trigeminal nerve of the patient. Along with this, about 20 food items are also kept to distract the patient. The patient is now asked to identify the odor. If the patient fails this test, his case is confirmed for anosmia.

Anosmia Medication

Anosmia treatments include removal of nasal polyps by surgical means or treatment with drugs and antibiotics. Surgical treatments are recommended only if antibiotics and nasal spray corticosteroids do not reduce inflammation of nasal polyps. There are two ways of surgical removal of nasal polyps: polypectomy (removing the polyp by mechanical suction) and endoscopic sinus surgery (removing the polyp by injection of a tube, with instrument and minuscule camera inside the nose). Antihistamines are used if there is inflammation in mucous membranes of the nose due to which anosmia has been caused. The most recommended anosmia drugs and antibiotics used for providing relief from this condition are:

• Metronidazole (antibiotic)
• Ciprofloxacin (antibiotic)
• Cefuroxime (antibiotic)
• Zythromax (antibiotic)
• Amitriptyline (drug)

*Note: The above drugs and antibiotics must be consumed only if they are prescribed by your doctor. Excess intake of drugs and antibiotics and excessive usage of nasal sprays and antidepressants can impair the sense of smell.

Anosmia is not a serious affliction if it is temporary. With the above anosmia treatments, ability to smell can be restored. People with less sense of smell are advised to include zinc supplements in their diet. Chain smokers must remember that smoking, over a prolonged period of time can impair their sense of smell. After all if this sense is impaired, one cannot really enjoy anything in life, especially food.