This book contains five articles in mental health, the first research aims to determine distress as experienced by unmarried women in Algeria, the second research aims to estimate and compare the prevalence of bullying among high school students, and their relationship with diligence at school, the third research is to identify some epidemiological data relating youth suicide attempts and its relationship to alienation, the fourth research is to examine the psychological distress caused by urbanization, finally the last research dedicated to clarify how the Hegelian philosophy has contributed to the psychological definition of the alienation concept.