Hi Lady,
Thanks for your query.
Though you have not mentioned about the presence of bite marks, I presume that he had had a spider sting at the site of bump.
Firstly, try to see if there is a sting (a hair-like minute object) in the bump. If present, or you can feel it, remove it with a needle.
Thereafter, in view of the strong likelihood of spider venom been infected in the skin, immediately start with
* an anti-histaminic, such as,
cetirizine 10mg thrice daily for 2-3 days (with the first dose immediately);
* Tablet
Prednisolone (5mg) Two tablets straight away and thereafter, two tablets thrice daily for 2-3 days till the symptoms go away.
* An anti-inflammatory pain-killer, such as, a combination of
ibuprofen +
Paracetamol, a tablet thrice daily for 2-3 days.
It will take 24-72 hours for the entire symptoms to go away.
If you find my response helpful and informative, do not forget an “excellent” (5-star rating) to my answer, to ENCOURAGE ALL doctors- engaged in social service- to render sound advice to the FREE queries.
Take care
Dr. Rakesh Karanwal