Reduced sense of taste can have various causes, ranging in severity from 'worrying' to 'generally fatal'. Finding the true cause means ruling out or confirming each possibility – in other words, diagnosis.
Diagnosis is usually a complex process due to the sheer number of possible causes and related symptoms. In order to diagnose reduced sense of taste, we could:
|Brain Tumor||4%||Ruled out|
|Vitamin B12 Need||1%||Ruled out|
|Vitamin A Need||0%||Ruled out|
|Lyme Disease||0%||Ruled out|
|Bell's Palsy||0%||Ruled out|
Has your sense of taste declined within the past few years, for reasons other than nasal congestion?
Possible responses:→ Don't know
→ No, my sense of taste has remained about the same
→ Yes, but it is due to ongoing nasal congestion
→ Yes, it is somewhat worse now
→ Yes, it is a lot worse now
Alzheimer's disease may lead to a decreased sense of taste.
The facial nerve also innervates some of the taste buds of the tongue, sometimes causing a reduction in the sense of taste.
Depression is associated with reduced levels of serotonin and noradrenalin. The decrease of these levels has been linked to the loss of sense of taste.
The sense of taste may become altered or reduced.
If the tongue is affected, this may result in a blunted taste sensation.
Zinc deficiency can present itself as a reduced or distorted sense of taste.