Hello Dear
I evaluated your query in depth .
@ As per your narration , it is an
abscess formation giving rise to lump ,
chills, bodyache , headache due to systemic menifestations
@ reason of lump disappearance is bursting of abscess inside the body
spaces which may be intramuscular planes / else region .
@ Can`t relax as there is no
rash externally, this is alarming sign of
underlying acute inflammation and immediately should seek medical
assistance without delay
Hope this clears your query .
Feel free to ask any health related query in future anytime .
Thanks for using Health care magic .
Regards .