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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Are Blisters At The Site Of BCG Shots Normal?

hey just got finished doing 6- BCG treatments around my anus is red little warm and blisters first thought I was getting a boil right under the bottom of spine. used witch hazel few times trying to bring it to head . a couple of Epson salt baths and now have some blisters scared to use anything now
posted on Sun, 18 Sep 2016
Twitter Fri, 3 May 2019 Answered on
Twitter Fri, 3 May 2019 Last reviewed on
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General & Family Physician,  's  Response
Hi,

This is quite normal and is indicative that the vaccine is working to produce antibodies in his body.

Serious long-term complications of BCG are rare. Most children develop a sore at the injection site. Once healed, the sore may leave a small scar.

In 1 to 6 weeks, a small red blister may appear where the injection was given.

After 6 to 12 weeks, the blister may turn into a small, weeping sore. The sore may take up to three months to heal and may leave a small scar. This is normal.

Hope I have answered your query. Let me know if I can assist you further.

Take care

Regards,
Dr AJEET SINGH, General & Family Physician
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Are Blisters At The Site Of BCG Shots Normal?

Hi, This is quite normal and is indicative that the vaccine is working to produce antibodies in his body. Serious long-term complications of BCG are rare. Most children develop a sore at the injection site. Once healed, the sore may leave a small scar. In 1 to 6 weeks, a small red blister may appear where the injection was given. After 6 to 12 weeks, the blister may turn into a small, weeping sore. The sore may take up to three months to heal and may leave a small scar. This is normal. Hope I have answered your query. Let me know if I can assist you further. Take care Regards, Dr AJEET SINGH, General & Family Physician