Complex sentence: Many disorders can be precipitated by drug use and tend to dissipate following cessation of drug use, although some disorders may affect the consciousness longer, depending on duration and frequency of drug use, as such behaviours can become embedded in the psyche if repeatedly performed.
Split into simpler sentences: Many disorders can be precipitated by drug use and tend to dissipate following cessation of drug use. Although some disorders may effect the consciousness longer depending on duration and frequency of drug use as such behaviours can become embedded in the psyche if repeatedly performed.