This eBook is the premier volume of our "Mental Illness/Central Nervous System" series, focussing specifically on "Bipolar and Related Disorders". This eBook release encompasses diagnoses such as bipolar I disorder, bipolar II disorder, cyclothymic disorder, substance/medication-induced bipolar and related disorder, bipolar and related disorder attributable to another medical condition, other specified bipolar and related disorder, and unspecified bipolar and related disorder. The content comprises a total of 178 "MCQs with Guiding Answers" and 192 "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, Duaa Alqhaiwi, Kariman Hatem, Marah Hussein, Areej Al-Manasyeh, Leen Albishawi, Eman Awwad, Dana AlTaweel, Farah Qaryouti, and Alia' Saidan.