Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concern..
As per your complain sudden swelling and
redness of the lips seems to be due to Allergic
Angioedema and can be due to exposure to some unknown allergen and as the effect of the allergen is reduced, the swelling starts subsiding gradually..
I would suggest you to consult an Allergist and get evaluated and he can do a thorough clinical evaluation and also advise you investigations like
Patch test ,
RAST test, food challenge test and rule out the exact cause of the problem and treat you accordingly..
As of now you can take anti allergics like
Benadryl in case if the swelling recurs..
You can also do cool compresses over the lips and cheek..
Drink plenty of water and take a nutritious diet..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora..