Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concern...
As per your complain although he has
Tonsillitis and fever which can be due to either bacterial or Viral Infection and it can be treated by taking antibiotics like Penicillin, doing warm saline gargles, throat lozenges, avoiding hot and spicy foods..
Fever can be controlled taking
Tylenol..
The another part of your problem is
severe toothache and gum sensitivity to hot and cold indicate that there is deep decay in tooth which has involved the nerve leading to inflammation and pain.
You should
consult a Dentist and get evaluated and get x Ray of the tooth done and if tooth can be saved
ROOT CANAL TREATMENT can be done for relief..
In case if tooth cannot be saved Extraction has to be done.
This has to be followed by antibiotics and painkillers..
Hope this information helps..
Thanks and regards..
Dr.Honey Nandwani Arora..