Traction alopecia is a form of hair loss caused by prolonged or repeated tension on the hair follicles.
Traction – Tension/Pulling ; Alopecia – hair loss
Traction Alopecia is most commonly seen in people with curly or tightly coiled hair, and is often caused by hairstyles that pull the hair tight, such as braids, weaves, or extensions.
When hair is pulled too tightly, it can cause damage to the hair follicles, leading to inflammation and scarring. Over time, this can cause the hair follicles to become damaged and stop producing new hairs, leading to hair loss.
The anatomy of the hair and scalp is important to understanding how traction alopecia works. Hair grows from “pockets” in the scalp called hair follicles. These are embedded in the scalp and have a specific structure.
Each hair follicle has:
a sebaceous gland that produces oil to help keep the hair lubricated and healthy.
Blood vessels that surround the hair follicle, which deliver nutrients and oxygen to the hair
An Arrector Pili muscle that is responsible for pulling the hair upright
Different layers/regions:
In traction alopecia, the inflammation is typically localized to the lower portion of the hair follicle, specifically the infundibulum and isthmus. These are the areas where the sebaceous gland and the arrector pili muscle are located, and where the hair follicle undergoes the most mechanical stress due to hair pulling.
The chronic tension on the hair shafts can cause damage to the hair follicle and disrupt the normal hair growth cycle, leading to inflammation and ultimately to hair loss. The inflammation can be observed histologically as perifollicular lymphocytic infiltrate, which is a hallmark of traction alopecia.
Hair follicle distortion: The hair follicle is the structure in the skin that produces and maintains hair growth. Tension on the hair can distort the hair follicle, causing it to stretch and bend. Over time, this distortion can damage the hair follicle and lead to inflammation.
Inflammation: When the hair follicle is damaged, it triggers an immune response in the body, causing inflammation. The inflammatory response is characterized by the recruitment of immune cells to the damaged area, which release chemicals that promote tissue repair and healing. However, if inflammation persists for an extended period, it can lead to scarring.
Scarring: Prolonged inflammation can lead to the accumulation of scar tissue in the hair follicle. Scar tissue is tough and fibrous and can permanently damage the hair follicle, preventing it from producing hair.
Hair loss: When the hair follicle is damaged to the point of scarring, it can no longer produce hair. This results in permanent hair loss in the affected area.
Traction on hair can cause damage to the infundibulum of the hair follicle and its associated structures. The infundibulum is the part of the hair follicle where the hair shaft exits the skin surface. This area is made up of the opening of the sebaceous gland, the upper part of the hair follicle, and the epidermal orifice, which is the opening in the skin through which the hair emerges.
Traction on hair can cause inflammation and scarring around the infundibulum, leading to the formation of papules, pustules, and scaly patches. The sebaceous gland can also be damaged, leading to the accumulation of sebum and inflammation. Over time, this can lead to the destruction of the hair follicle, resulting in permanent hair loss.
Traction can also cause damage to the arrector pili muscle, which is a small muscle that is attached to the hair follicle. This muscle is responsible for causing the hair to stand on end in response to cold or fear. Traction can cause the arrector pili muscle to become stretched, which can lead to damage and inflammation.
Preventing and treating traction alopecia caused by braids involves a combination of protective styling techniques, proper hair care, and seeking professional help if necessary. Here are some steps to take:
There are several products that may help with traction alopecia, but it’s important to note that they may not work for everyone and should be used in conjunction with other preventive measures. Here are some products that may be beneficial:
It’s important to note that these products may not work for everyone, and it’s always best to speak with a healthcare provider or dermatologist for personalized recommendations. Additionally, it’s important to address the root cause of traction alopecia, which is often tight hairstyles, and make lifestyle changes to prevent further damage to the hair follicles.
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