its could be an infection from tooth leading to collection of pus in that area.. consult a dentist asap.. you may require rct or extracion of that tooth .. for the times being you can start tab cefadroxill 500 2times + cap lactovit 2 times + tab zerodol sp 3times daily for 5 days .. do luke warm warm saline rinse

remember these medicines are for symptomatic relief only...

hi, thnx for your query, first of all i would like to know do you have any carious tooth. if so this swelling might be because of tht tooth.2. would like to know whether the border of swelling is irregular or round and does it have any ulcerated appearance? please go to your dentist and get it throughly checked. hope this is help ful.

Hi,

Thanks for writing in.

The pus filled abscess developed on the roof of mouth may be due to-
associated deep dental caries
periodontal infection resulting in absecss.
Tooth fracture with pulpal involvement.
Emergency access opening has to be done.
The abscess has to be drained and curetted.
Take complete course of antibiotics,

Hello,
Thanks for posting your query,
you might have caused trauma to your soft tissue, and as a normal defense mechanism of our body, a blister like swelling developed on the palate.
I advise you to avoid picking or even popping it, it will heal on its own, ideally within 5-7 days the swelling will disappear completely.
But,if its hurting you then you may have to see your dentist, as he/she will prescribe you a topical gel.
also, you can use listerine (twice/day),
even warm saline rinses(3-4 times/day) will relieve symptoms if present.
I hope this information has been both informative and helpful
Regards

Hi
It could be infected sebaceous cyst,which occurs due to infection of hair follicle.
As the pus has come out,please take antibiotic and anti inflammatory drug.
It will subside.
Nothing to worry
Wish you good health
Regards