What causes academic trauma in most cases is fear and anxiety. This fear may arise from student's inability to do well in academic activities thereby making him/her become anxious. This inturn causes distress to the student and if not properly managed can lead to suicidal thoughts and actions.
Treat from fellow students and lecturers also contribute to academic trauma like you said but if a student will be nice to his/ her fellow students and adhere to a lecturer's instructions (positive instructions) he/she may not be a victim to get traumatized academically.
In simple language, be polite and always play it cool to be at the safer side, you will never be a victim of academic trauma.