On my break at work and I've been having a look. I've found a strong suspect for what might be up with Phil's favourite daughter and guess what the main reason people get it is?
In idiopathic intracranial hypertension (IIH) there is raised pressure within the skull (raised intracranial pressure), which puts pressure on the brain. Idiopathic means that the cause of this raised pressure is unknown. The main symptoms are headache and loss of sight (visual loss). It mostly affects women of childbearing age who are overweight or obese.
Maybe, if this is what she has, this will be the kick up the bum she needs to finally lose weight. Stop laughing! It could happen!