If still shedding 8 weeks into using 5% rogaine what does it tell you about the type of hair loss you have?

Tough to tell - but one explanation might be that these treatments are expanding the blood vessels in your scalp  and causing your heart to pump harder to fill them.  Minoxidil does this - it is known as a "vasodilator"  (it lowers blood pressure too).  Check with your doctor...

Folliculitis is inflammation of the hair follicle. People that have problems with minoxidil are more likely having an irritation, inflammation, or an allergic reaction in the skin. Propylene Glycol is the most likely culprit for this reaction in many formulations of minoxidil. A dermatologist...

Women can safely use spironolactone as well as topical minoxidil to address hair thinning. Advisable to start on a lower concentration minoxidil when beginning.