Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your query white coating over the tongue after using inhaler that might be containing
Steroid can be due to Yeast infection over the tongue known as
Oral Thrush..
It can cause inflammation of tongue and gums leading to pain and soreness..
As the white coating is gone that means infection is resolving there can still be inflammation of tongue and gums leading to pain and soreness..
Nothing to worry, start gargling with
Nystatin mouthwash to resolve the residual infection..
Gargle with numbing mouthwash containing Lignocaine..
Take Vitamin B complex supplements daily..
Suck ice pops and do
cold water rinses..in case of no improvement consult an Oral Physician and get evaluated..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.