I am not expert of this subject, but I'd surely start from the OMIM (Online Mendelian Inheritance in Man) database to get some information on the genetics (plus references) of this disease. You are linked below.
It was very kind of you to give me the above link. I can see very well the importance of your choice as your are specialized in genetics. Allow me to contact you back in case I need further guidance.
Karaman et al. mentioned some cases are autosomal dominant, some other cases autosomal recessive transmission of the disease and suggested multifactorial causes and genetic mechanism of idiopathic intracranial hypertension. Check some other ref.s too, hope they give some information.