Undiagnosed symptoms

About 4 months ago my brother started having symptoms or what he thinks is some type of aretits or a vascular issue. His left face started to feel puffy all the time like blood was pooling there. He started to get a eye twitch. Deep pulsating pains behind eye like a head ache on and off. Now behind his left lower lip feels hot and puffy all the time the blood vessel behind it feels swollen.He has been saying he drools a lot more. He gets sharp stabs down his tongue and his tongue feels numb and burned after he gets a lot of those. His facial artery going over the back of his mandible jaw bone has become hard and bigger. His artery's in his lower left jaw (behind his chin) have become very long hard and swollen they feel hot and he says it feels like he has dip in his lower him right where they are. They press on his mental nerve in his chin causing his left lip and chin to go numb and get little electric shocks. His jaw feels painful and tired when he chews a lot. His left throat feels tight all the time and when he feels where it feels tight with his finger there is a hard thick cable cord artery on the side of his throat right where the pulsating pains behind and tightness is. The same left side in his mouth below his left jaw Feels swollen and tight. He has been getting deep pain in the middle of his left neck. Down his left inner arm into his pinky and index finger. These same fingers feel ice cold they burn. In the middle of the night his hands and forearms feel puffy hot and numb. He has been very dizzy and short of breath.