question: 3 years back, my son (24 years) was having severe headache and pressure on the eyeballs, later on had by high blood pressure & vomiting; we had to take him to emergency, and they punctured his head to take out some fluid, and then he had to undergo brain surgery to remove some cyst, which was blocking the flow from two tubes to down bellow. Now he is out of country, and seeing some red spots in his eyes, and very high blood pressure 160/105, in spite of medicines. What it could be?Anil