Hello, There are two possibilities for your kind of symptoms: 1. hidradenitis suppurativa : this is the most likely diagnosis in you case. It is a disease of apocrine glands which is characterized by multiple deep seated, pus filled lesion associated with comedones, scarring, sinus formation. This kind of disease a prolonged treatment with antibiotics and retinoids. 2. Recurrent folliculitis (infection of hair follicle): Very unlikely diagnosis which presents as pus filled raised lesion.this would require to get a pus culture and sensitivity done to find any resistant organism and to treat accordingly. I would suggest you to meet your dermatologist for diagnosis and its treatment. I don t think that treatment for MRSA has to do anything with it. Both look purely co-incidental events to me Thanks Dr Jyoti Gupta