How can I buy another home if I owe HUD for a reverse mortgage?

the fact you have a reverse mortgage does not prohibit you per se from buying another home.   the reverse mortgage is tied to your lifespan but you can buy another home- your issue will probably be related to qualifying for another mortgage.   the one thing you can do is rent out your current home and use the proceeds to rent a ranch- but do check your mortage to be sure renting is permitted (you might need permission to do so, but you do have a medical reason).