I believe this to be out the scope of practice for most (nearly all) trainers, unless they have an advanced degree or specific education using this application. You have to know every muscle orgin, insertion, and body landmark to properly apply the tape, it’s not simply pressed on.
Even so, without a proper examination it’s hard to say what the cause of the condition could be. Zinc, magnesium, and other vitamins and minerals have an impact on the immune system. Bursitis, tendonitis and ligament damage are seperate issues all together.
If you’re not sure, always refer. Safety is always priority one.