The answer to this question is unique to each person. What is traumatic to one person may not be experienced as traumatic by the next. Each experience is valid.
When most people think of trauma, they think of natural disasters, car accidents, or assault, but there are many more kinds of traumas than these.
Other, less obvious experiences can still have a negative impact on a person and can be considered traumatic. These events include divorce, witnessing injury to another person, verbal abuse, a parent with mental illness, or experiencing painful medical procedures.
Also, the absence of needed developmental experiences can be traumatic. These absences include neglect, social isolation, lack of validation and attunement, frequent moves, or changes in caregivers. Although these events may be overlooked or minimized by those around you, this makes them no less meaningful or impactful.
In the trauma field we use the term complex or attachment trauma to refer to repetitive, on-going abuse or neglect typically beginning in childhood within the family. This type of trauma has a lasting effect on how your identity and relationships develop.