Thanks for the query..
I have gone through your query and can understand your concern...
As per your complain and presentation of symptoms you are suffering from BURNING MOUTH SYNDROME
secondary to DRY MOUTH or XEROSTOMIA
The dryness in throat and sticky saliva in mouth with spitting out of mucous is due to reduction in the serous fluid of saliva and can occur due to a number of reasons like Salivary gland
disorders, nerve damage
supplying Salivary Glands, allergic reaction
to certain Medication like blood pressure controlling medicines, Oral contraceptives and many others, Yeast infection like Thrush, autoimmune disease
like Sjogrens Syndrome, radiation therapy in head and neck region, long standing dehydration
etc are a few common causes..
You need to get evaluated by an Oral Physician and get a confirmatory diagnosis done as the treatment will be planned accordingly..
Treatment of the underlying cause will resolve the dry mouth and ultimately burning mouth..
As for temporary relief you can drink plenty of normal to preferably cold water..
Suck on ice pops..
Avoid hot, spicy and acidic foods..
Chew sugar free chewing gum as it helps in stimulating saliva flow..
Saliva substitute like Artificial Saliva drops containing methyl cellulose can be instilled multiple times in mouth for lubrication..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.