I’ve checked and no, I don’t have head-lice and anyway it’s only at the back of my head, above the nape and behind my ears. I’m sure it’s heat related as I can feel tiny bumps in there. I’ve got fine hair and my theory is that it’s trapping more warm air close to my scalp. It’s driving me absolutely mad with rage, I want to scratch wildly and relentlessly and it’s taking all my willpower and multiple distraction techniques stop myself !