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11 possible causes of 'Can't smell'

1. Anosmia
The term anosmia means lack of the sense of smell. It may also refer to a decreased sense of smell. Ageusia, ...

Symptoms:

  • Can't smell
2. Nasal Polyps
Have you ever felt like you have a cold that never goes away? Nasal congestion that doesn't seem to go away, ...

Symptoms:

  • Postnasal drip
  • Headache
  • Speech articulation problems
  • Change in voice
  • Can't smell
3. Enlarged Adenoids
Adenoids are small tissues located at the back of the throat. They are similar to the tonsils, and located ri...

Symptoms:

  • Restless sleep
  • Decreased sense of smell
  • Nasal obstruction
  • Runny nose
  • Can't smell
4. Sinus Infections (Sinusitis)
A sinus infection, or sinusitis, is a common condition that affects 31 million people in the United States ea...

Symptoms:

  • Pain
  • Can't smell
  • Snoring
  • Sinusitis
  • Sore throat
5. Parkinson's Disease
Parkinson's disease (PD) is a progressive neurological disorder. It first presents with problems of movement....

Symptoms:

  • Muscle spasticity
  • Muscle pain
  • Slurred speech
  • Memory loss
  • Can't smell
Click to view article 6. Cocaine and related disorders
Cocaine is extracted from the coca plant, which grows in Central and South America. The substance is processe...

Symptoms:

  • Can't smell
  • No pupillary reaction to light
  • Nosebleed
  • Hoarseness
  • Abnormal heart rhythms
7. Head Injury
Injuries to your brain, skull, or scalp are all types of head injury. A head injury may be mild or severe dep...
This condition is considered a medical emergency. Urgent care may be required.

Symptoms:

  • Can't smell
  • Aphasia
  • Ataxia
  • Blindness
  • Choking
8. Hypothyroidism
The thyroid gland is an important endocrine gland that controls the body's metabolism. It is a small butterfl...

Symptoms:

  • Difficulty speaking at normal rate
  • Hair loss
  • Body mass index over 30
  • Heart rate altered
  • Can't smell
9. Adult Brain Tumor
A brain tumor is a collection of abnormal cells in the brain. Brain tumors can be either malignant (cancerous...

Symptoms:

  • No menstrual period
  • Can't smell
  • Aphasia
  • Stopped breathing
  • Droopy eyelid
Click to view article 10. Nasal Trauma
Nasal trauma is defined as any injury to the nose or related structure that may result in deformity, decrease...

Symptoms:

  • Runny nose
  • Black eye
  • Stuffy nose
  • Red nose
  • Can't smell
This feature is for informational purposes only and should not be used to diagnose.
Please consult a healthcare professional if you have health concerns.
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