My son had them at 10 mths old, and luckily he didn't suffer with them as much as his 4 yr old sister. I found calamine cream, rather than lotion , was better as it didn't dry out like the lotion. Also, with my 4 yr old I used to give her bicarb of soda baths which really help soothe and dry the pox out-but check that that would be ok for an 8 mth old, but I can't see why not. Best of luck and also have you and your wife both had them, as I hadn't and I caught them 2 weeks later- boy, was I poorly!!!