Boil on my baby’s left arm

[Himalaya2]

My husband noticed a boil on the left arm of my 5 weeks son today while giving him the bath. He doesn’t have any other boil anywhere on his body. Would anyone have idea what it could be?
Thanks a lot in advance

Did he get the bcg jab?
Whereabouts on the arm?

It can happen after the bcg jab. If in doubt ask your hv

@dementedpixie @GrumpyHoonMain Thank you for your reply. It’s in that area where bcg jab was done. He got it when he was one day old. I texted the number given by hv but haven’t got any reply yet, I guess they will reply on Monday only. Is it harmful?

It is a normal reaction to the bcg
www.nhs.uk/conditions/vaccinations/bcg-tb-vaccine-side-effects/

Both mine at BCG as newborns. The reaction is normal and shows the vaccine has taken well. Perfectly normal, just keep an eye on it.

[quote Himalaya2]**@dementedpixie* @GrumpyHoonMain* Thank you for your reply. It’s in that area where bcg jab was done. He got it when he was one day old. I texted the number given by hv but haven’t got any reply yet, I guess they will reply on Monday only. Is it harmful?[/quote]
Its actually a good sign that the vaccines working. Keep it clean and dry and it should clear up in 4-6 weeks.

Don't panic OP exact same thing happened to us . I thought he had a insect bite but it was his BCG . He's now 5 months and it's still raised and angry looking but I have been told totally normal

Thank you everyone. I am relieved now. 😊