OUr DD 23 mnths has started pulling her ahir out at night and when she's tired. She's nearly bald on one side now (she sucks her thumb so only one hand is pulling). HV (useless piece) says leave it and she'll grow out of it and don't cut her hair to stop her, which would be fine if the other side was being pulled out too. She's not distressed by it, she seems to do it for comfort. Any suggestions as to wha to do? Or anyone else come across it before so I can tell DW that we're not alone?