[1] His "diagnosis" of Richard Wagner's supposed mental illness was a significant contribution to the idea of degenerate music.

In 1872 Puschmann published Richard Wagner: eine psychiatrische Studie, which set out the ways in which he believed the composer was suffering from mental illness, including persecution mania and sexual depravity.

The book kicked off decades of speculation about Wagner's morals and medical condition, and the debate on degenerate music.

Nachträge zu Alexander Trallianus: Fragmente aus Philumenus und Philagrius nebst einer bisher nach ungedruckten Abhandlung über Augenkrankheiten.

Berlin 1886.Geschichte des medicinischen Unterrichts von den ältesten Zeiten bis zur Gegenwart.