I regard these as lying on the same continuum, so would not offer separate, discrete definitions. Curiously enough, dictionaries, DSM and psychiatry textbooks also make no such distinction, or offer definitions of AH which most tinnitus sufferers would also fulfil. I assume that in fact most people regard AHs and tinnitus as two totally distinct conditions with quite different causes, easily dintinguished in clinical practice. So, can we please have twin definitions that clearly articulate this gut feeling?