A few weeks ago I posted that my 21 month dd had a bald patch on the back of her head. Since then another has appeared on the top of her head, and working in a hospital , I was able to get her to see a dermatologist quite quickly. She has alopecia areata, which is a condition characterised by the loss of clumps of hair. I know it can be limited, as it is at the moment, or can progress to total loss . Does anyone else have any experience of this condition?