There’s no one single cause of OLD. Instead, it may be linked to other types of mental health disabilities such as:
This group of disorders refers to people who have emotional attachment issues, such as a lack of empathy or an obsession with another person.
Types of attachment disorders include disinhibited social engagement disorder (DSED) and reactive attachment disorder (RAD), and they both develop during childhood from negative experiences with parents or other adult caregivers.
In DSED, you might be overly friendly and not take precautions around strangers. With RAD, you may feel stressed and have problems getting along with others.