Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain it seems that the symptoms of pus formation and redness or inflammation at the side of thumb seems to be due to infection in the area of skin near the nail and occurs commonly due to causes like bacterial or
fungal infection..
It can occur due to conditions like traumatic injury to the side of the nail like while cutting nail, nail biting habit,hitting of thumb etc.
The white lump seems to be most probably due to formation of a pus filled abscess..
As the swelling and pus is increasing even after applying
neosporin,I would therefore suggest you to
consult a General Surgeon and get evaluated and a thorough clinical evaluation is generally sufficient for diagnosis..
You can be advised to apply a combination of steroid, antibiotic and antifungal ointment over it..
If it is painful topical application of numbing ointment and taking anti inflammatory painkiller like
Ibuprofen can help..
Do cool compresses over it..
If the lump is large and painful
Incision and drainage followed by a course of antibiotics and painkillers will relieve..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.