This covers Nursing Home and in home care. Not medical treatment per se but costs for assisted living facility, aids to help dress, clean, feed people who are physically unable and living at home.
I’m told that if you are smart you would buy Long Term Insurance early in life. The policy would compound so you stop paying after a number of years. You can get policies adjusted for inflation and direct payout of remaining policy beneficiary.
Depending on what other medical conditions exist on top of a person with dementia, for example, can live for years but need daily assistance. Relying on family members to step in is not prudent. Medicaid will step in if the patient is destitute. Quality of care becomes an issue at that point.