Attention-Deficit/Hyperactivity Disorder (ADHD) is a prevalent neurobiological disorder, persisting into adulthood for approximately 5% of the global population. Adults with ADHD often grapple with a spectrum of comorbid challenges, including developmental brain impairments, learning disabilities, increased risks of traffic accidents, addiction, criminal activities, and a range of physical and mental health issues. This research article delves into the multifaceted difficulties faced by adults with ADHD and presents an extensive review of various treatment methodologies. This article critically examines the efficacy and limitations of diverse interventions, such as Cognitive-Behavioral Therapy (CBT), Dialectical Behavioral Therapy (DBT), Mindfulness-Based Cognitive Therapy (MBCT), occupational therapy, physical exercise, goal management training, and innovative digital health interventions. The analysis highlights significant improvements in core ADHD symptoms, executive functioning, emotional regulation, and essential life skills facilitated by these treatments. All findings in the related research underscore the necessity for an integrated, multidisciplinary deeper understanding in treatments and interventions for adult ADHD. This comprehensive evaluation contributes valuable insights to the evolving field of adult ADHD treatment, advocating for holistic, tailored treatment regimens that address the unique needs of this population.