Hi forgetandforgive:
First off use TV against them.
NO TV unless you're up, creamed, dressed & fed & possess clean teeth by 8:15. So TV is the reward for getting those not so glamorous jobs done.
SECOND - this is when parents are allowed to be evil. So enjoy it. DH and I agree 7:30 is the limit, after that it's lights on, radio blaring, clanging of pans, etc...
THIRD - remember that long term learning to get up, get yourself organised (clean teeth, brushed hair, fed, dressed) is a life skill.
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I know it's Arghh! Awful! and you feel bad because clearly your children aren't sleeping well with their excema.
As others have suggested, talk to your doctor. My children had excema when infants (so before primary) and I certain found major changes of season (Summer to Autumn/ Winter to Spring) often were times of flair ups.
Also talk about diet with the doctor. My husband's cousin has severe excema and she has followed a very strict diet for years which she feels has helped enormously. She still has to regularly cream - but her skin is healthy and she feels so much better for it.
HTH