Kindly give a more detailed description of the "knots" you mentioned on the head. No surgeon will intervene until he is convinced it is worth doing it. If the knots are recurring, incision and drainage
is certainly not the cure as it will not solve the problem. Also you mentioned about a cyst
in the brain. There are many different types of cysts and it is difficult to find any correlation between the internal and external manifestations. I think if you provide more details of the condition your daughter is suffering from, or perhaps the CT scan
finding of her brain, it will help us guide you better.
Kindly keep me posted regarding this.