Because an acute hematoma can lead to cauliflower ear, prompt evacuation of the blood can prevent permanent deformity. There are many described techniques for the drainage of blood in the acute stage to prevent hematoma, including simple needle drainage, continuous suction devices, placing a wick, and incision and drainage. After the blood has been drained the prevention of re-accumulation becomes the most pressing issue, this has been achieved with many techniques including: direct pressure dressings, in and out mattress sutures, buttons placed on sutures, thermoplastic splints, sutured cotton balls, and absorbable mattress sutures. The use of simple drainage becomes less useful after six hours from the injury and when there is recurrent trauma. In these cases it has been suggested that open surgical treatment is more effective in returning the cosmetic appearance and prevention of recurrence. The outer ear is prone to infections, so antibiotics are usually prescribed. Pressure can be applied by bandaging which helps the skin and the cartilage to reconnect. Clothes pegs and magnets can also be used to ensure adequate pressure is applied to the damaged area Without medical intervention the ear can suffer serious damage. Disruption of the ear canal is possible. The outer ear may wrinkle and can become slightly pale due to reduced blood flow; hence the common term "cauliflower ear". Cosmetic procedures are available that can possibly improve the appearance of the ear.