Oral and topical antibiotics are often ineffective in the treatment of erythema and flushing. The most effective way to prevent the occurrence of flushing episodes and the progression of the disease is to avoid the associated trigger factors. Low-dose clonidine (Catapres; mg twice daily) may be effective in controlling flushing, especially in women who are postmenopausal. 18 A nonselective beta blocker (such as long-acting propranolol [Inderal], 80 to 240 mg daily, and nadolol [Corgard], 40 to 80 mg daily) may also be used to treat erythema and flushing. 18
It is widely suspected that the anaerobic bacterial species Propionibacterium acnes ( P. acnes ) contributes to the development of acne, but its exact role is not well understood.  There are specific sub-strains of P. acnes associated with normal skin, and moderate or severe inflammatory acne.  It is unclear whether these undesirable strains evolve on-site or are acquired, or possibly both depending on the person. These strains have the capability of changing, perpetuating, or adapting to the abnormal cycle of inflammation, oil production, and inadequate sloughing of dead skin cells from acne pores. Infection with the parasitic mite Demodex is associated with the development of acne.   It is unclear whether eradication of the mite improves acne.