Hello doctors.I am a very concerned daughter who was informed today by my father that he has been experiencing some troubling issues all revolving around his head and they have been continuing to get worse for 6 months. My father has allowed this to continue for 6 months before informing anyone! let alone a doctor. He is in his middle 50 s and eats relatively healthy but, he is a smoker.His symptoms include:*frequent head aches ( didn t specify where in the head)*loss of vision or black out in only one eye (I believe the left)*while writing he says he forgets how to write a letter. For example B I am very concerned. I work as a nurses assistant so I am aware how quickly things can go from bad to terminal...I have already lost my mother a few years ago to alcoholism so, my fears are quite real.I have provided all the information he told me to you. Please grace me with your knowledge. I know you might not be able to diagnosis but, any information is vital to me.Thank you immensely for your time.my e-mail is YYYY@YYYY THANK YOU!!!!Jennifer Deming