 [ Symptoms ] my 80 year old father a swollen knee bad ear pain slurred speech stumbling when walking memory loss talking to himself temporally not knowing who a person is hearing things [ Disease ] hi all of these symptoms are geriatric symptoms and signs based on aging process i agree with docc4you you can use cold packs to treat the knee swelling try psychological counseling social activities and memory gamesask him about what is today what did you eat yesterday do you remember when you met my mum first …etcthat will help stropping the deterioration of memory … maintain a healthy dietvegetables and fruitsand some carbs … you can take him to somewhere there is hydrotherapy physiotherapy as this may help joints stay active and muscles stay toned as possible regards