After giving BCG
injection which is given Intradermal the wheal or elevation on skin becomes normal in 5-10 min. No mark or redness
is seen immediately.
The reaction starts after 6weeks and a boil appears which oozes out pus in 2-3 consequtive cycle and the site of injection heals on own by forming a scar.No antiseptic creams or medication is required at this time .
However if the boil is too large and the axillary lymph
nodes become large and painful then it has to assessed by the doctor.