[bane]

Yes, this behavior is a typical pattern of people suffering from long-term depression who are entering a final stage before suicide.

Of the typical signs: a sudden change in behavior, loss of interest in favored activities, setting affairs in order, withdrawing from others, self destructive behavior.

You wouldn't believe the number of suicides who, as their last and final act, cleaned up (shaved, got a hair cut, put on a suit or nice dress, put on makeup, etc.) and prior to that suddenly gave away all of their stuff particularly prized possessions (and for creative types, their lifetime collection of work).