ds2 (4.5mo) has 2 blisters on his leg
one is small, was fluid-filled when i spotted it, at the top of his leg (within the nappy area). skin not particularly red around it
the other i only spotted after it had burst - it's on the back of the calf (hence me not spotting it earlier) - and the damaged skin is very red. the skin around it is a little sticky, so it must still be leaking a little
he doesn't seem too troubled by them
any ideas? can't think of anything that would have caused friction just there - he tends to be dressed in sleepsuits at any rate (so skin only exposed at nappy change times, or pre/post bath)