Hallucinogen Persisting Perception Disorder (HPPD) and Flashback-are they Identical?

Leo Hermle^1*, Melanie Simon¹, Martin Ruchsow¹, Anil Batra² and Martin Geppert¹

¹Department of Psychiatry, Christophsbad, Göppingen, Germany

²Department of Psychiatry, Eberhard Karls University, Tübingen, Germany

^*Corresponding Author: Leo Hermle, Department of Psychiatry, Christophsbad Faurndauer Str. 6 – 28, D-73035 Göppingen, Germany, Tel: +49/7161/6018250, Fax: +49/7161/6019596 Email: