Concussions in older adults can also be dangerous. This is because concussions in older adults are often missed. If you are caring for an older adult who has had a fall, check him or her for symptoms of a concussion. Signs of a serious problem include a headache that gets worse and/or increasing confusion. See a doctor right away if you notice these signs. If you are caring for an older adult who takes blood thinners such as warfarin (Coumadin), and who has had a fall, take him or her to a doctor right away, even if you don’t see any symptoms of a concussion.