Losing hair on one side of the head is not uncommon. However, it can still be mentally and emotionally jarring if you’re experiencing it. Around 80% of men and 50% of women will experience hair loss in their lifetime, which could manifest as one-sided hair loss [1].
Many people worry about hair thinning and balding on one side for aesthetic reasons and seek to cover it up before consulting a doctor. However, this can lead to undiagnosed conditions.
In this article, we will cover:
It can be worrying when you begin to lose hair on one side of your head, and you’ll likely ask yourself why this is happening. Here are some conditions that may cause one-sided hair loss in both men and women.
It is important to exercise caution with tight hairstyles, as these may cause hair shedding through consistent pulling on the hair follicles, which can lead to damage. This type of hair loss is known as traction alopecia.
This type of hair loss is more likely to happen evenly, affecting either the parting or the hairline, depending on the style. However, if you wear your hair in a style which puts more pressure on one side, it is likely to affect your hair.
It is most often seen in women who wear tight ponytails or braids. However, it can occur in men too. Learn more about how ponytails cause hair loss.
Alopecia areata causes noticeably round patches of hair loss to form on the scalp, and it is common to see it on one side only. Most researchers agree that alopecia areata is an autoimmune condition [2]. While you may be interested in hair transplants for alopecia areata, unfortunately, these aren’t usually suitable.
Scarring alopecia is caused by a specific condition or scalp trauma which damages and scars the hair follicles. Any direct trauma to a specific part of the scalp may cause hair loss in that area.
Primary scarring alopecia includes conditions such as dissecting cellulitis and frontal fibrosing alopecia. Lichen planopilaris is the most common type of primary scarring alopecia [3]. On the other hand, secondary scarring alopecia refers to burns, surgery, trauma, and radiation.
You are more likely to see hair loss on one side with either secondary scarring alopecia or dissecting cellulitis, as this causes painful cysts to develop on the scalp in unpredictable areas.
Telogen effluvium is a type of non-scarring hair loss triggered by stress or medication. The condition can affect both men and women. Like female pattern baldness, telogen effluvium first presents as diffuse thinning, with the scalp becoming visible through the thinning hair.
Hair loss due to telogen effluvium usually affects less than 50% of the scalp and does not follow a typical pattern, so it is possible for thinning hair to appear on one side of the scalp [4], usually due to variations in hair growth patterns or scalp circulation.
However, this is not particularly common, hair loss is usually diffuse and appears on both sides of the scalp. Telogen effluvium is temporary and usually goes away once the stress factor or any medications that cause hair loss are removed.
Trichotillomania is a mental health condition in which people repeatedly pull out their own hair. It’s more common among women. A study carried out in 1991 found that 3.6% of people experience this condition, while more recent studies performed on college-aged individuals reported a prevalence of more than 11% [5], indicating that this condition may be becoming more common.
Pulling your hair out from one place on the scalp may be the reason your hair feels thinner. Since many people tend to focus on a specific area, they often see thinning on one side due to follicular damage.
A compound hair develops when clusters of hair shafts form in one follicle. When this happens on one side of the scalp, it can create the impression that one side of the hair is denser and one side is thinner.
It is uncommon to develop compound hairs on just one side of the head — if this does happen, it’s typically associated with repeated friction, plucking, or irritation. The condition can be secondary to traction alopecia, minor scalp trauma, or localised inflammation in certain scalp areas.
The condition mainly affects elderly, overweight, or very hairy men. However, one study reported seeing compound hairs in an 18-year-old woman of average build with no genetic history of compound hairs [6].
Hair loss on one side of the head can sometimes be a sign of male pattern baldness. According to the Norwood scale, you are unlikely to have noticeable hair loss until the Norwood stage 3, when you will see visible balding and a receding hairline.
Male pattern baldness can affect one side more at first. England captain Harry Kane, for example, is at Norwood stage 3 in the image below and has more hair loss on his left temple than his right. Kane may have had a hair transplant to address this.
However, male pattern hair loss is progressive and often leads to near-complete baldness if left untreated. Any one-sided hair loss will eventually spread to both sides of the head.
Treating temple hair loss early with an effective male hair loss treatment can help stop the progression of the condition, prolonging the lifespan of your thick, healthy hair.
It is a little-known fact that predominantly sleeping on one side of your head can cause hair loss. If you tend to sleep on one side more than the other, and you sleep for 8 hours a night, the blood vessels on that side are being suppressed for 8 hours every day. This consistent suppression of circulation in one part of the scalp causes the hair follicles to weaken, and creates thinning and balding.
Try sleeping on your back or on the other side of your head. If you can do this consistently for a few months, you should eventually start to see healthy hair regrowth on the affected side.
Here are some ways to disguise thinning hair on one side of the head.
Hiding hair loss on the crown when you have short hair can be easy. Simply brush the hair from the front of your head backwards and over your crown. This may mean you need to grow your hair out a little to cover it, but it is the easiest and cheapest way. This can also help disguise balding around a double crown.
For a receding hairline that is stubbornly creating hair loss on one side more than the other, you could try combing your hair over to one side, or brushing the hair forwards over the temples.
You could also try a fade hairstyle, with the fade beginning where your hair loss starts and leaving thicker hair on top.
With long hair, it is a lot easier to disguise thinning hair on one side as the hair provides more coverage. The first thing you could try is changing your parting line. Simply style your hair to cover the thinning. This should move your parting to the other side of your head (and may reduce your normal parting width).
If you’re not keen to change your parting line, an updo is an effortless hairstyle for hair thinning on one side. This style is versatile and can be in the form of a messy bun or a loose ponytail. Don’t tie your hair up too tightly, as this can make hair loss worse.
A side plait or side ponytail is also a great way to cover one-sided hair loss, as you can gather your hair over the thinning side and style it.
Hair loss on one side can sometimes be treated, especially if it is due to a habit such as sleeping on one side more often, subconscious behaviours, or hair products/styles.
Medications for hair growth, such as minoxidil and finasteride can treat hair loss. Minoxidil is available as a topical liquid which can be applied to the specific affected area of the scalp, which makes it an efficient option for those losing hair on one side.
Finasteride is an oral medication which is usually taken for a longer time and is prescribed alongside other treatments for hair restoration, such as a hair transplant. It’s usually only suitable for men with male pattern baldness, so it can’t treat traction alopecia or other common types of one-sided hair loss.
Scalp micropigmentation may also be suitable. This is a semi-permanent procedure which covers bald or thinning patches with pigment, giving the appearance of greater density.
If you don’t choose the right SMP clinic, you may end up with certain scalp micropigmentation regrets — so choose a reputable clinic with proven results to avoid this.
For those looking for a more permanent hair loss solution, a hair transplant may help and is a viable option even for those with long hair. Of course, not everyone is a candidate for a hair transplant, which is why you should discuss this with a trichologist. They can assess your hair loss and devise a plan for the best course of action.
When it comes to a hair transplant for one-sided hair loss, most patients opt for an FUE transplant, as this is less invasive and causes the least amount of hair transplant scarring.
LLLT promotes hair growth by targeting the scalp with low-powered lasers. These lasers stimulate cell activity and blood flow to your hair follicles, which can improve hair growth for people with male and female pattern baldness [7].
PRP hair treatment can help to improve hair growth [8] if you’re thinning on one side of the head. This method involves injecting platelets from your own blood into areas of thinning or balding on your scalp. It can stimulate weakened or inactive hair follicles, leading to thicker, healthier hair growth.
If you’re experiencing one-sided hair loss, you could benefit from a consultation with a trichologist. These hair doctors can perform diagnostic trichology tests, such as hair loss blood tests or a hair pull test, to identify the reason your hair is falling out.
Once you have a diagnosis, we provide hair loss treatments for anyone looking to reverse hair loss on one side of their head, including:
Book your consultation at one of our clinic locations to get started on your hair restoration journey today.
There are several treatments for one-sided hair loss, and a trichologist can advise you on the best options. These include medication, low-level laser therapy, PRP hair treatment, scalp micropigmentation, and hair restoration surgery.
Male or female pattern baldness (androgenetic alopecia) can cause hair to recede more on one side than the other, especially in the early days. However, if androgenetic alopecia is the cause of your hair loss, it is progressive, and any one-sided hair loss will eventually spread to both sides of your head.
Yes, you can. There are several techniques to reverse balding and restore your youthful locks. These include medication, lifestyle changes, PRP hair treatment, low-level laser therapy, and a hair transplant.
This depends on several factors. Men typically start balding earlier than women, often in their late twenties or early thirties. Women may not start balding until their forties, fifties, or later. Some people start experiencing premature hair loss in their teenage years, while others maintain a healthy head of hair for a lifetime.
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