Is It Possible To Have Chickenpox After Vaccination?

Dear Ask The Doctor: My Daugher is 8 years old.. and we had given her chicken pox vaccine abt 3 yrs ago... since yesterday we are seeing small rashes (non fluid) on her back (blisters) and stomach (very mild like a mosquito bite)..we went to the local clinic here..they said its a chicken pox and gave lacto calimine...but she does have mild itchiness and fever is generally mild (abt 99 degree) as well but comes every after 7-8 hrs... Generally I believe that chicken pox should come on entire body (where as she has only 20 blisters) So we are little worried that this is only chicken pox and nothing else

Chickenpox is a viral infection that will usually have blisters starting on the chest, abdomen or back, then slowly spreading to the face, arms and legs. This is the typical progression of the chickenpox rash, called centrifugal (starts from the trunk and spreading away from it). Chickenpox rashes will range from roughly 20-500 blisters, which usually scabs within 1 week. It will take clinical experience to diagnose chickenpox by merely seeing the typical rash. Individuals who’ve had the chickenpox vaccine may not be 100% protected. Chickenpox may still be acquired however the rashes don’t look as ugly, fewer, milder accompanying signs and symptoms (fever, cough, colds) and fewer complications, if at all. It is good however that the vaccine still offered some protection, since the rashes are minimal. Since she is already having active infection, her body will produce antibodies enough for lifetime protection, therefore, it will be very unlikely she will re-acquire chickenpox. I hope this helps. Take care always.