Sometimes the integration of these primitive reflexes gets interrupted and they are then considered retained reflexes. Retention of primitive reflexes can be caused by a variety of factors. The birth process is a key factor in the integration of these reflexes. So in some cases, if there is a traumatic birth or c-section, it may lead to retained reflexes. Some additional causes may be falls, traumas, lack of tummy time, delayed or skipped creeping or crawling, chronic ear infections, or head trauma.
Below is a list of primitive reflexes and what can happen if they are retained.