Our expert says:
Is sounds like a Hotspot , they can be caused by many things. They don't just happen something will irrate the skin and then the dog will rub and scratch the area -this disrupts the protective lining of the skin and bacteri literally take over. Often on the head the cause could be an ear infection to an allergy. It is important that the area is clipped very short and a topical cortisone/ antibiotic cream is applied AS it is recurrent I would look for an underlying cause start with the ears (never rule out flea allergies !!)
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