I cannot find a rash and the temp does seem to come down with calpol so it seems under control. But he was screaming in pain yesterday that his legs were hurting and he couldn't walk down the stairs. He looks really pale and wiped out although the calpol does give him a boast so is masking the illness. He actually slept in til 10.45 today which is not like my son ever!!!! But was complaining of belly ache when he first work up. Do you think this could be flu?