Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain, slight swelling and
numbness of lips that comes and goes along with hives over the hamstrings area seems to be most probably due to
Allergic reaction and is not due to stress..
It can occur due to certain allergens like certain foods [commonly sea foods, nuts etc], medicines, skin cosmetics, leather, latex etc..
As soon as you are exposed to the allergen there is an outbreak of allergic reaction..
You need to consult an Allergist and get evaluated as he /she can do an allergic testing like RAST test, Food challenge test etc to confirm the exact allergen..
Once the cause of
allergy is ruled out you can start avoiding exposure to the allergen and it will help in preventing the outbreaks..
If at all you accidentally gets exposed to the allergen you will have to take antiallergics like Levocetrizine or
Allegra..
Doing cool compresses over the welts or hives can also help..
An
immunotherapy can also be instilled as it will help in reducing the severity as well as frequency of the reaction..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.