Hi there ~ You do not give me much information excepting the assessment of an imaging study that gives him the diagnosis of chronic lacunar infarction in left thalamus. This can result in a lot of physical disabilities including but not limited to poor physical functioning, sensation and coordination. I would like for you to visit with a neurologist and / or a neuropsychiatrist who can help with this condition. I am thinking you have all the investigations in his case. Please take all the reports when you visit with your doctor, who can help suggest you with what needs to be done with regards to therapy, medications and food restrictions or lifestyle changes. I hope this helps. Take care and have a lovely day !