What is the name of an urge to gamble continuously despite harmful negative consequences?

sadly , my twin brother has this condition , wow, i never gambled , worked too hard for my money.,but my twin brother has almost lost his home because of this.

It's one of the most destructive addictions because of its impact on family, losing homes, etc

My friend lost her mother on way to casino in auto accident who was already so indebted by losing family residence. what a tragedy in teenage school years. ! ! !