One of my childhood friends had shingles when she was fourteen or fifteen.
My father, her doctor, said that he had seen other cases of shingles in teenagers. He thought it might be that after puberty one was more likely to develop shingles from the infection than chicken pox. I have no idea whether this idea can or has been substantiated since the 1960s when my friend had her bout of shingles.
She was very ill with it, but recovered without any lasting ill-effects, so I hope your grandson will too.
Book Title by Their Authors (Parlour Game)
Churchill to be axed from British banknotes in the name of diversity.


