Flat head - help!

Shaina

My dd has brachycephaly. Her flat spot extends across the whole back of her head. We have seen the specialist and he's suggestion to helmet her. I'm scared to spend $2700 on something she may hate to wear for something cosmetic.

Has anyone done a helmet? Or just let nature round it out and kept them off the back of their head?

Help! We have to decide asap