Usually in order to become a Rehab technician you would be certifted as a nursing assitant or have exsperince working as a caregiver. We all work in unity with the same goal in mind. As Paitent care tech in a hospital. I assist Physical therepy on daily basis. Some of the challenges could be regarding the patients care plan. How severe their needs are or based on their attitude or motivation. Some of these problems could based on how they are feeling overall. Pain level, sleeping or eating problems. Or even upset with self, family, staff, and mental health. Now these are some of problems that exist. I would suggest networking and visting some places you may be interested in working.