What Causes Bleeding On Right Side Of Head?

My boyfriend has been taking the shot for about 2yrs .In the last 4-5 most he has been shaking his whole body & sometimes it may be just his hands.He is alert & talking to me all the while, it has not helped any with his ed.He is 65yrs old.Out of concern he has had 2 MRI & an eeg all were normal.He had an incident. back in Sept where his truck door hit him in the head & did not break the skin. He told me about this accident 4 days later . Well the very next day he had a weak spell & Co weakness on the left side.That is when they did the 1st MRI it showed a slight bleed on the right side of his head.A neuro doctor talked with us she said that when the truck door hit his head it shifted his brain & hit a blood vessel which caused the tiny bleed.They kept him in ICU for 4 days & sent him home, but told a clot was like attached to the plaque in his caratoid. They could not do surgery until the bleeding stopped.He finally had surgery about 2wks later.Since this shaking started he has had 2 MRI. & an eeg.these were all normwe.We seen neuro doctor which started him on a starter pack of Lamotrigine which is now taking 100mg once a day, and actually don t. know what I am asking .Do you think at all the testerone would be causing any of this?