First of all, diagnosis needs to be established as that will affect the choice
of treatment and prognosis. Based on information provided, Folliculitis, Hydradenitis supurativa, and Acne inversa should be taken into consideration first. Please, let us know what diagnostic tools were/are utilized by your physicians and with what conclusions.
Second, preventative measures can be of great help. Avoid: shaving with dull razor, friction, exposure to occlusive chemicals and sweat.