I’ve always been curious if my younger brother has some sort of mental disorder. My parents have never taken mental health seriously so he has never had an official diagnosis. 

He’s currently a Junior in high-school, so around 17 years old. He has a very low attention span and spends most of the day daydreaming while walking around the house. It seems like he is fully immersed into whatever situation he is daydreaming about, and he has emotional connections to imaginary friends in his daydreams. While working on homework or any other task, he’ll start pacing around the house while daydreaming, and then return to his work after the daydream ends. This repeats basically every hour, each time daydreaming about something else. A week ago, he told me that sometimes he doesn’t feel alive and conscious in the present. He is definitely disconnected from reality and spends most of his time daydreaming rather than living in the real world.

He also has Tics that include wrinkling his face and making strange sounds. I’m not sure if this is related to his daydreaming. 

It would be impossible to convince my parents to take him to a doctor. I’ve looked online and the only thing I’ve found is an article about ADHD symptoms.

Please let me know what you guys think.