Every few weeks, or maybe once a month, I have a skin problem. This problem affects the back of my head in my hair and also my beard. Typically, I will get cysts on the back of my head first, followed closely by a few cysts on my chin in my beard. This are not normal acne, but instead, are very deep and take a long time to heal.
I've read that this could be folliculitis or something similar. The beard issues could relate to shaving and be ingrown hairs.
Even more odd, when I get these problems, a few of the beard hairs turn white (the whole hair as it grows, not just an infection at the base).
What could be causing these infections?