I don't think its parasites. My first step would be my 30 day cleanse with PROMOTE for ten days. Oxypowder is a laxative not a true body cleanse. Be sure that the diet contains enough enzymes or add my ABOSRB. Also check the thyroid for the hair loss problem. Low hormone levels can contribute to the problem.
If you are afraid of the healing crisis then start out on the program at half dose and work your way toward the recommmeded amount. If you begin to notice any uncomfortable side effects with your skin then stop the program for a few days and then start back gradually. You have to try and work through the problems bit by bit until you start to feel better. Let me know if you have any furthur questions.