Phantosmia: What causes olfactory hallucinations? (2024)

FAQs

Phantosmia: What causes olfactory hallucinations? ›

Phantosmia is a condition that causes you to detect smells that aren't actually in your environment. It can happen in one nostril or both — and the odors may be foul or pleasant. Common causes include colds, allergies, nasal polyps and dental issues. Treatment depends on the underlying cause.

Phantosmia may be caused by a head injury or upper respiratory infection. It can also be caused by aging, trauma, temporal lobe seizures, inflamed sinuses, brain tumors, certain medications and Parkinson's disease. Phantosmia can also result from COVID-19 infection.

If symptoms persist for more than a few days, doctors may first recommend simple treatments, such as using a saline solution to rinse out mucus from the nasal passages. Certain drugs may help people with long lasting phantosmia control their symptoms: anesthetic to numb the nerve cells. steroid creams or sprays.

Epilepsy that involves a part of the brain called the temporal lobe (odor hallucinations are most common) Fever, especially in children and the older people. Narcolepsy (disorder that causes a person to fall into periods of deep sleep)

An individual with phantosmia suffers from olfactory “hallucinations,” experiences of odors when no odor source is present (Leopold 2002; Frasnelli et al. 2004).

Smelling things that aren't there is called phantosmia. It can be unpleasant and affect how things taste. But it isn't usually serious and may go away by itself in a few weeks or months. See your GP if the strange smell doesn't go away in a few weeks.

Phantom Smells, such as odd, strong, acrid, metallic, blood-like, sour, ammonia-like, acidy, and repugnant smells, to name a few, are common anxiety disorder symptoms. Many anxious people report having phantom and odd smells as an anxiety symptom.

In most cases, phantosmia isn't a cause for concern and will go away in time. However, in rare instances, it could indicate a more serious health condition, such as Parkinson's disease, stroke or a brain tumor. Another name for phantosmia is olfactory hallucinations.

If you have phantosmia, the odors can vary from smells that almost make you sick to really pleasant scents. But most people with phantosmia tend to detect bad smells. The odors have been described as “burned," "foul," "rotten," "sewage," or "chemical." You may be smelling it from one or both of your nostrils.

A study that evaluated the ortho- and retronasal olfactory functions in MS patients found that 75% of the 16 investigated patients showed a quantitative olfactory disorder, 6.25% reported parosmia, and 18.75% reported phantosmia (29).

What is the first stage of hallucination? ›

Stage 1. Also referred to as the comforting stage,a person may begin to experience a sense of anxiety, loneliness or guilt that can cause them to focus obsessively on thoughts that will relieve those feelings. However, the sufferer realizes the thoughts are their own and finds that they can control them.

A number of psychiatric medications such as olanzapine (Zyprexa), quetiapine (Seroquel), and haloperidol (Haldol) have all been associated with causing hallucinations, in addition to zolpidem (Ambien), eszopiclone (Lunesta), clonazepam (Klonopin), lorazepam (Ativan), ropinirole (Requip), and some seizure medications.

A patient's reaction to hallucinations can be an indicator of authenticity. If the patient tries to get rid of the voices on his own, by playing music or humming, or seeking extra medication, this is a sign they are real.

Neurologists play an important role in treating many central causes of phantosmia, such as migraines, neurodegenerative disorders such as Alzheimer or Parkinson disease, and temporal lobe seizures.

How are smell disorders diagnosed and treated? Both smell and taste disorders are treated by an otolaryngologist, a doctor who specializes in diseases of the ear, nose, throat, head, and neck (sometimes called an ENT).

Olfactory hallucinations

The perception of an odor by one person that is undetectable by others is called phantosmia. This is often due to a temporal lobe seizure, described as an uncinate fit. The hallucination is brief, and accompanied or followed by altered consciousness, or other epileptic manifestations.

It's a symptom of many common conditions, including allergies, colds and upper respiratory infections. It could also indicate a brain-related condition, including epilepsy, stroke or Alzheimer's disease. If you have phantom smells that last longer than a few weeks, schedule an appointment with your healthcare provider.

If you're constantly smelling something nobody around you seems to be able to smell, you may have a condition called phantosmia. It's a term used to describe olfactory hallucinations -- that means the organs related to your sense of smell are sensing odors that aren't really there.

Phantosmia and dysgeusia as the first presentation of glioblastoma.