We are having our first family nit experience (hot on the heals of threadworms, kids are adorable little blighters aren't they?) 
DD's were pointed out by the hairdresser (for maximum embarrassment!) I hadn't noticed them as they were so flippin miniscule - my reading prep. has said sesame seed sized - well yes if you slice it lengthways x10! I STILL can't tell you what an egg looks like though there were lots of tiny nymphs (babies) and just 2 lively adults (plus the one I picked from my own head - boak 
)
Anyway, I followed the mumsnet nitty gritty mantra but some of the hatchlings were too small to be caught by the comb! DD has v. fine hair and I could see 3 tiny ones in a line on her hairline but the comb wasn't catching them. I picked them out by hand then worried they'd got lost in my fingernails. They really are so tiny (like less than half a hair's width) but about 2mm long. Heaven knows how many other small ones got missed. I know I need to keep combing every few days - but didn't realise that's because I needed to 'grow' them so the nitty gritty catches them Gah!
Also what DO the eggs look like? Aside from one big fat adult my head was producing nothing except the odd tiny white dot (round not long shaped like they are on internet pictures)...
And what are the chances of me being able to make a hairdressers appointment with a clean bill of health on Friday if I Hedrined and combed last night?
Scalp is actually sore and I can't tell if that's lice bites, chemicals or comb-gouging....