Hidradenitis suppurativa can affect one spot or multiple areas of the body. Signs and symptoms of hidradenitis suppurativa include: 1  Blackheads. Small pitted areas of skin containing blackheads â often appearing in pairs or a double-barreled pattern â are a common feature.  Red, tender bumps. These bumps often enlarge, break open and drain pus.
Sebum is an oily substance that's secreted by sebaceous glands to keep skin moisturized. Too much leads to oily skin and too little leads to dry skin. Sebum is an oily substance that's secreted by sebaceous glands to keep skin moisturized.
How to Reduce Sebum Production. 1  Oily and greasy foods aggravate oily skin conditions. Cut out unhealthy fats like in butter, fried food, and beef. Replace them with healthy fats found in foods like nuts, seeds, avocados, and fish. 2  For omega-3 fatty acids, eat foods like salmon, walnuts, and flaxseed.