Attention deficit hyperactivity disorder (ADHD) is a condition that affects people's behaviour. People with ADHD can seem restless, may have trouble concentrating and may act on impulse.

An attachment disorder is a behavioral disorder that affects the ability to form and maintain relationships. Attachment disorders are common in children but can occur in adults.

Relationship issues are profoundly personal and vary widely. Some of the most common kinds of relationship problems include: Trust issues/infidelity: You might wonder whether your spouse is honest about your relationship or other aspects of life.