Cauliflower ear is a permanent change in the shape of the outer ear that usually develops after repeated blows, friction, or pressure. These injuries can cause blood to collect between the ear cartilage and the tissue that supplies it with nutrients, forming an auricular hematoma.
Common early symptoms include pain, swelling, tenderness, and a soft or firm lump on the ear. Without prompt treatment, the blood collection can interfere with the cartilage’s blood supply, causing scar tissue and new cartilage to form and giving the ear its characteristic thick, uneven appearance.
Early treatment usually involves draining the collected blood and applying compression to prevent it from returning. Medical care should be sought promptly after an ear injury that causes swelling, especially when there is severe pain, hearing difficulty, signs of infection, or a visible change in the ear’s shape.
Main symptoms
The symptoms of cauliflower ear include:
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Pain or tenderness in the outer ear
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Swelling after a blow, fall, or repeated friction
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Redness or bruising
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A soft, fluid-filled lump on the ear
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A feeling of pressure or fullness in the ear
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Thickened, firm, or uneven ear tissue
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A permanent change in the ear’s shape
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Reduced hearing when swelling or deformity narrows the ear canal
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Ringing in the ear in some cases
A recent auricular hematoma may feel soft or fluctuant, while an established cauliflower ear is usually firm because of scar tissue and abnormal cartilage formation.
Common causes
Cauliflower ear is caused by damage to the outer ear, which can result from contact and combat sports or accidents that cause direct injuries to the ear.
Repeated rubbing, pressure, or blows can damage small blood vessels and cause blood to collect beneath the skin. This is especially common in wrestling, boxing, martial arts, and rugby. Falls, car accidents, and other direct impacts can also cause this type of injury.
If the blood collection is not treated quickly, scar tissue and abnormal cartilage can form, causing the ear to become thick and uneven.
Confirming a diagnosis
Cauliflower ear and auricular hematoma are usually diagnosed through a physical examination. A doctor will ask about recent injuries, sports participation, when the swelling began, and whether the ear has changed in size, color, or shape.
During the examination, the doctor checks for tenderness, bruising, fluid beneath the skin, firm scar tissue, infection, and narrowing of the ear canal. A recent hematoma is generally soft or fluid-filled, while an older cauliflower ear is thicker, harder, and irregularly shaped.
Imaging tests are not normally necessary. Ultrasound, CT, or other tests may be considered when the diagnosis is uncertain, a deeper injury is suspected, or there are symptoms such as significant hearing loss, severe head trauma, or damage to nearby structures.
Treatment options
Treatment depends on how recently the injury occurred and whether permanent cartilage changes have already developed.
1. Drainage of an auricular hematoma
A recent auricular hematoma should be assessed and drained as soon as possible. Depending on its size and how long it has been present, a healthcare professional may remove the blood with a needle or make a small incision.
The area is cleaned and numbed before the procedure. Drainage relieves pressure and helps restore contact between the tissue and the cartilage, reducing the risk of permanent damage.
The ear should not be drained at home. Improper drainage can cause infection, further cartilage damage, heavy bleeding, and recurrence of the hematoma.
2. Compression after drainage
Compression is an essential part of treatment because the empty space inside the ear can refill with blood. A pressure dressing, splint, bolster, or specially shaped material may be secured to both sides of the ear.
The compression usually remains in place for several days and requires medical follow-up. The ear is checked to make sure that blood has not collected again and that there are no signs of infection or skin damage.
3. Medications
Pain relievers may be recommended to control discomfort after an injury or drainage procedure. Antibiotics may also be prescribed when there is a high risk of infection, contaminated skin, cartilage involvement, or signs such as increasing redness, warmth, drainage, or fever.
Medication alone does not remove an auricular hematoma. When blood has collected beneath the skin, drainage and compression are generally needed to prevent deformity.
4. Surgery for established cauliflower ear
Once thick scar tissue and abnormal cartilage have formed, simple drainage will not restore the ear’s shape. Reconstructive or cosmetic surgery may be considered to remove or reshape the damaged tissue.
Surgical treatment is planned according to the severity and location of the deformity. Results vary, and the ear can become deformed again if it is injured after surgery.
Possible complications
An untreated auricular hematoma can permanently change the appearance of the ear. Other possible complications include:
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Infection of the skin or cartilage
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Tissue death caused by poor blood supply
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Recurrent blood collection
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Severe scarring
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Narrowing of the ear canal
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Conductive hearing loss
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Ongoing discomfort or tenderness
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Dissatisfaction with the ear’s appearance
Cartilage infections require urgent treatment because they may cause additional tissue damage and worsen the deformity.
When to see a doctor
Medical care should be sought after an ear injury when there is swelling, bruising, tenderness, or a fluid-filled lump. Treatment is most effective before scar tissue and abnormal cartilage begin to form.
Urgent evaluation is recommended when symptoms include:
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Rapidly increasing swelling
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Severe or worsening pain
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Fever
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Pus or fluid leaking from the ear
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Spreading redness or warmth
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Hearing loss
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Dizziness or balance problems
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Severe headache, confusion, or loss of consciousness
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An injury involving the head, face, or ear canal
These symptoms may indicate an infection, significant cartilage damage, hearing involvement, or a more serious head injury.