As a Noun: 1. ALZHEIMER'S is brain disorder that gives a person dementia (i.e. the person forgets lots of things, gets confused, angry etc.). Note: 1. There appears to be no commonly used Auslan sign for ALZHEIMER'S. If you know a sign for ALZHEIMER'S used by you or other Auslan users (deaf people or interpreters) please go to "missing sign feedback" and supply details. Thank you.