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Causes. By Mayo Clinic Staff. A stuffy nose from a cold is a common cause for a partial, brief loss of smell. A polyp or swelling inside the nose can lead to a loss of smell. Aging can cause a loss of smell, especially after age 60.
Answer From Paul Y. Takahashi, M.D. Some loss of taste and smell is natural with aging, especially after age 60. But other factors can contribute to loss of taste and smell, including: Nasal and sinus problems, such as allergies, sinusitis or nasal polyps. Viral infections, including the common cold and the flu.
Losing all sense of smell is called anosmia. The loss might be brief or long term, depending on the cause. Losing even some sense of smell can cause a loss of interest in eating. Not eating might lead to weight loss, poor nutrition or even depression. The sense of smell can warn people of dangers, such as smoke or spoiled food.
When to see a doctor. Loss of smell caused by colds, allergies or sinus infections usually clears up on its own in a few days or weeks. If this doesn't happen, make a medical appointment to rule out more-serious conditions. Loss of smell can sometimes be treated, depending on the cause. For instance, an antibiotic can treat a bacterial infection.
Temporal lobe seizures begin in the temporal lobes of the brain. These areas process emotions and are important for short-term memory. Symptoms of a temporal lobe seizure may be related to these functions. Some people have odd feelings during the seizure, such as joy, deja vu or fear. Temporal lobe seizures are sometimes called focal seizures ...
The phantom smell may seem to always be there or it may come and go. Phantosmia may be caused by a head injury or upper respiratory infection. It also can be caused by aging, trauma, temporal lobe seizures, inflamed sinuses, brain tumors, certain medicines and Parkinson's disease. Phantosmia also can result from a COVID-19 infection.
Reduced sense of smell and taste. Other symptoms can include: Ear pain. Headache. Aching in the teeth. Cough. Sore throat. Bad breath. Tiredness. Chronic sinusitis and acute sinusitis have similar symptoms. But acute sinusitis is a short-lived infection of the sinuses often linked to a cold. The symptoms of chronic sinusitis last at least 12 weeks.
Oral thrush — also called oral candidiasis (kan-dih-DIE-uh-sis) — is a condition in which the fungus Candida albicans accumulates on the lining of your mouth. Candida is a normal organism in your mouth, but sometimes it can overgrow and cause symptoms. Oral thrush causes creamy white lesions, usually on your tongue or inner cheeks.
Loss of taste or smell. Extreme tiredness, called fatigue. Digestive symptoms such as upset stomach, vomiting or loose stools, called diarrhea. Pain, such as headaches and body or muscle aches. Fever or chills. Cold-like symptoms such as congestion, runny nose or sore throat. People may only have a few symptoms or none.
3. Shortness of breath. Strenuous exercise, extreme temperatures, obesity and high altitude all can cause shortness of breath. Shortness of breath also could be a sign of another health problem. If you have unexplained shortness of breath, especially if it comes on suddenly and is severe, seek emergency medical care.