I'm not sure if this should be in another section, but please help?
Ok, this is not about me but I'm really worried. My dad started seeing double this afternoon, on/off for some periods of time. He went to the doctor, who sent him to the ER, who sent him to another hospital to do some tests. As far as I have understood, they said he had a blood clot (clots?) in his brain. Does anyone know anything about this? Causes, risks, whatever?