This eBook is the premier volume of our "Mental Illness/Central Nervous System" series, focussing specifically on "SCHIZOPHRENIA SPECTRUM AND OTHER PSYCHOTICS DISORDERS". This eBook release encompasses diagnoses such as delusional disorder, brief psychotic disorder, schizophreniform disorder, schizophrenia, schizoaffective disorder, substance/medication-induced psychotic disorder (SIDD), psychotic disorder due to another medical condition, and catatonia specifier. The content comprises a total of 139 "MCQs with Guiding Answers" and 307 "Linked References". This eBook also contains numerous "Study Highlights or Summary Keypoints" alongside the "CLINICAL PRACTICE INSIGHTS" section. Our primary clients include medical professionals, clinical pharmacists or PharmDs, nurses, and various other individuals in the healthcare sector, such as mentors, residents, and students. We adhere to conventional design principles for all our sequential eBook publications to circumvent the trend of "hypercoloremia mania" in eBook design. This predominantly employs the official black and white colour scheme. This publication resulted from a collaborative effort with my skilled and dedicated coauthors, namely PharmDs Arwa Alashqar, Najd Alyasjeen, Leen Albishawi, Marah Hussein, Duaa Alqhaiwi, Areej Al-Manasyeh, Kariman Hatem, Farah Qaryouti, Dana AlTaweel, Alia' Saidan, and Eman Awwad.

Corresponding author; Clinical Pharmacy Specialty “MOH’D NOUR” BANI-YOUNES”, MSc Clinical Pharmacy, BCPS, BCCCP, BCNSP, BCACP, BCIDP