Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain it seems that along with biting the lip it is also exaggerated due to inflammation caused by chemicals and heat due to
smoking..
As it also has a yellow white coating there seems to be infection over the bump..
The best way to avoid its occurrence is to avoid smoking
meth..
As of now to relieve the symptoms you can apply a numbing gel containing Lignocaine or Choline Salicylate over it.
You can apply a combination of
Steroid and antimicrobial ointment over it..
You can do cool compresses over it..
Take anti-inflammatory painkiller like
Ibuprofen for relieving pain and inflammation..
Avoid spicy food and maintain a good hygiene..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.