Ear growth can refer to several different things, such as overall ear size increases with age or the development of abnormal growths. This response will address both.
Normal Ear Growth
Generally, human ears continue to grow throughout life, albeit at a slower rate as we get older. This is primarily due to changes in cartilage, the flexible tissue that makes up much of the outer ear. Unlike bone, cartilage can continue to grow and change shape over time. This natural process contributes to the gradual increase in ear size observed in older individuals.
Abnormal Ear Growth (Exostoses and Osteomas)
However, certain conditions can cause more significant and abnormal ear growth. The reference provided speaks specifically about benign bony tumors of the ear canal, known as exostoses and osteomas. These are not normal growth of cartilage, but rather excessive bone growth. Key points to understand are:
Causes of Exostoses and Osteomas:
- Excess Bone Growth: Both conditions are caused by the body depositing too much bone in the ear canal.
- Repeated Cold Water Exposure: The reference indicates that repeated exposure to cold water may increase the risk for developing these growths. This is often seen in swimmers and surfers.
Understanding the Difference:
| Feature | Exostoses | Osteomas |
|---|---|---|
| Cause | Irritation of the bone from exposure to cold water | Genetic or unknown |
| Growth Pattern | Usually multiple growths | Usually a single growth |
| Location | Typically at the bony part of the ear canal | Located at the junction of the bony and cartilaginous part of the ear canal |
Impact of these growths:
- They can block the ear canal, leading to:
- Ear wax build-up
- Difficulty hearing
- Ear infections
Summary
Ear growth occurs naturally over time, mainly due to changes in cartilage. However, abnormal growths like exostoses and osteomas result from excessive bone growth, often triggered by repeated cold water exposure or other unknown causes.
