Retrograde Alopecia

These are places that usually aren’t significantly affected by other types of hair loss. 

There’s very little research on retrograde alopecia, but it appears to be associated with androgenetic alopecia (also called male pattern baldness). 

What’s the differRetrograde alopecia is a form of hair loss characterized by the gradual thinning or recession of hair at the nape of the neck or the sides of the scalp. ence between retrograde alopecia versus regular alopecia? Unlike traditional male pattern baldness, which is very common and often starts at the crown or temples, retrograde alopecia affects regions considered to have more resilient hair.

What are the Symptoms of Retrograde Alopecia?

Initially, retrograde alopecia symptoms are often slower to develop than other forms of male hair loss. If your hair looks or feels a little different lately, take notice of any of these early signs of retrograde alopecia:

• Thinning hair at the base of the neck. Hair becomes sparse at the lower part of the scalp, near your hairline.

• Hairline recession at the sides of the scalp. Your hairline may move upward on the sides, creating a higher boundary of hair growth.

• Loss of density in affected areas. Hair in the affected regions may appear less voluminous, with noticeable thinning over time as finer hair grows. 

• Uniform or patchy progression. While retrograde alopecia progression may occur evenly, some individuals might experience patchy thinning at the nape or sides.

Causes of Retrograde Alopecia

The exact causes of retrograde alopecia are not fully understood, but it’s believed to be linked to genetics, as well as autoimmune responses, hormonal imbalances, and age.

Retrograde alopecia causes often involve several factors, some of which overlap with other types of hair loss. Like with any other condition, what causes retrograde alopecia for one person may not for another. 

Here are some of the more common reasons why someone may develop this type of hair loss: 

Dihydrotestosterone (DHT)

DHT is an androgen hormone that plays a key role in hair loss. It binds to receptors in scalp hair follicles, leading to reduced hair growth. 

Men with a genetic sensitivity to DHT are more likely to experience retrograde alopecia, as the hormone affects follicles located even in less typical areas.

Nutritional Deficiencies

More research is needed, but not getting enough nutrients like iron, zinc, or biotin (true deficiency of which is rare) in your diet may compromise hair follicle health, weakening hair and contributing to certain types of alopecia. Other research suggests an association between low levels of protein or vitamin D and hair thinning. 

Nutritional imbalances can disrupt the hair growth cycle, making the base and sides of the scalp more vulnerable to thinning. This may be the result of either a diet that’s generally low in nutrients, problems absorbing those nutrients, or both.

Stress

If you regularly experience high physical or emotional stress, this can take a toll on many areas of your health, including your hair. 

Chronic stress triggers hormonal imbalances, such as elevated cortisol levels, which can disrupt the hair growth cycle and lead to stress-induced hair shedding, called telogen effluvium. 

When stress is ongoing and not well managed, it can also worsen underlying conditions like androgen sensitivity or poor scalp health, increasing the risk of retrograde alopecia. 

Autoimmune Conditions

In some cases, retrograde alopecia may occur alongside an autoimmune disease, in which the body mistakenly attacks healthy cells. People with autoimmune disorders, such as lupus or alopecia areata, may be at higher risk for hair loss patterns resembling retrograde alopecia.

When retrograde alopecia is related to an autoimmune response, the body incorrectly targets healthy hair follicles, resulting in gradual thinning of hair.

Genetics

Having a family history of hair loss increases the risk of retrograde alopecia in men. This genetic predisposition means you’re more sensitive to factors like DHT and the natural aging of hair follicles. 

Men with genetic links to hair thinning or baldness are more likely to experience follicle weakening, including in areas like the base of the neck and sides of the scalp.

Risk Factors for Retrograde Alopecia

Certain factors may increase the likelihood of developing retrograde alopecia:

• Family history of hair loss. If your family has a history of androgenetic alopecia, you have a higher risk of retrograde alopecia.

• Age. It’s a fact of life that, as we get older, we’re more likely to notice thinning hair and recession, which may be due to retrograde alopecia.

• How you style your hair. If you have long hair, pay attention to how you’re wearing it. Tighter hairstyles, like buns, ponytails, or braids, can stress your hair at the sides and nape of your neck, which may trigger traction alopecia.

• How you care for your hair. Frequently using high-heat styling tools, being an aggressive comber, or exposing your hair to harsh chemicals can weaken it and trigger loss. 

• Existing scalp issues. Chronic conditions like dandruff, seborrheic dermatitis, or psoriasis can potentially weaken your hair follicles and contribute to hair loss.

Diagnosing Retrograde Alopecia

It can be hard to determine whether you have retrograde alopecia or another form of hair loss on your own. 

If you’re experiencing changes in your hair growth, it’s always best to speak with your healthcare provider, who may refer you to a dermatologist for a specialized exam.

Here are some of the things you might expect when pursuing a retrograde alopecia diagnosis:

• Clinical exam. Your provider will perform a comprehensive physical exam to get a better idea of the pattern and extent of your hair loss, the condition of your scalp health, and any signs of inflammation or scarring. These details help differentiate retrograde alopecia from other hair loss types. For instance, traction alopecia can be caused by tight hairstyles or otherwise repeated stress to your hair follicles that causes loss.

• Photograph documentation. If you’ve been taking photos of your hair loss, bring them to show your provider. Documenting the progression can be helpful in monitoring changes before and after treatment.

• Trichoscopy. Trichoscopy uses a handheld magnification tool (called a dermatoscope) to closely examine the scalp and hair. It evaluates follicle and scalp health and hair shaft abnormalities, providing insights into the progression of retrograde alopecia.

• Hair pull test. This noninvasive test evaluates active hair shedding by gently pulling hair strands, helping test the fragility of hair and any potential disruptions in the normal hair growth cycle.

• Hair density measurements. A provider may measure hair per square centimeter to quantify the severity of your hair loss and track the progress of your treatment.

• Biopsy. Your healthcare provider may remove a small piece of scalp tissue in a scalp biopsy to analyze follicular structure and rule out other conditions that could cause hair loss, like scarring alopecia or autoimmune diseases.

Treatment for Retrograde Alopecia

Wondering how to stop retrograde alopecia? Treatment typically requires targeting existing symptoms with medications, laser therapy, and hair transplantation. 

Early and appropriate hair loss treatments can help preserve and encourage hair restoration in affected areas.

Because retrograde alopecia closely resembles androgenetic alopecia (male pattern hair loss), the same treatment options often apply. 

However, targeting the unique pattern of hair loss at the nape or lower scalp may require tailored approaches. While there’s no known cure, several therapies can significantly slow its progression and improve hair density over time.

Medications

Medications are often the first line of defense, especially when the goal is to preserve hair or stimulate regrowth without surgical intervention. 

The following two medications are FDA-approved for treating androgenetic alopecia and may be used for retrograde alopecia as well:

• Topical minoxidil. Minoxidil (commonly known as the brand name Rogaine^®) is a vasodilator, which means it encourages new hair growth by increasing blood flow to your scalp and hair follicles and pushes hairs into the anagen (growth) phase of the hair growth cycle. Depending on your preference, this medication is available topically as a liquid solution and a minoxidil foam. It typically requires a twice-daily application. It can take three to six months to notice visible results, and it’s important to stay consistent if you want to maintain those improvements.

• Oral finasteride. Oral finasteride (sold under the brand name Propecia^®) is a prescription medication that blocks the conversion of testosterone to DHT. This helps reduce or block DHT-related damage that causes hair follicle miniaturization and hair loss in retrograde alopecia. Research in more than 500 Japanese men with androgenetic alopecia found 91 percent experienced hair regrowth while taking finasteride. 

Oral minoxidil and topical finasteride are also options for male hair loss (such as in our Minoxidil & Finasteride 2-in-1 Spray), but they are not FDA-approved for this purpose. However, available evidence suggests they are comparably effective as their counterparts listed above.

Low-Level Laser Therapy (LLLT)

Low-level laser therapy (LLLT) is a non-invasive, at-home or in-office option that can help stimulate hair follicles and promote regrowth. This treatment increases blood circulation and stimulates new hair growth, which may be helpful for managing retrograde alopecia.

Devices like laser caps, helmets, or combs emit red light at specific wavelengths that penetrate the scalp and increase cellular energy production in hair follicles. This process helps promote blood circulation and may extend the growth phase of hair.

LLLT shows promise for androgenetic alopecia, and while research on retrograde alopecia specifically is limited, its mechanism of action suggests it may be worthwhile for this type of hair loss as well. 

It's especially helpful when used in combination with minoxidil or finasteride. Laser therapy is typically used at least a few times per week, and visible improvements may take several months.

Hair Transplant Surgery

For men with more advanced retrograde alopecia or those who haven't seen results with medications, another option to treat retrograde alopecia is hair transplant surgery. 

It involves taking donor hair grafts from healthy areas on your scalp and implanting them in areas with hair loss or hair thinning. 

This also means that you must have sufficient donor hair to be a good candidate for a hair transplant with retrograde alopecia. 

In some cases, if you don’t have enough donor hair on your scalp, follicles might be taken from other places, like your chest or beard.

There are two main surgical procedures to help restore hair loss due to retrograde alopecia, which are considered equally effective:

• Follicular unit extraction (FUE). FUE is a minimally invasive (and more popular) option that involves extracting individual hair follicles from a donor area (usually the back of the scalp) and transplanting them to thinning or balding regions. For retrograde alopecia, FUE can restore hair density in affected areas like the base of the neck. This technique leaves minimal scarring, making it ideal for men who prefer to wear their hair short. FUE allows for precise placement, making it an effective solution for retrograde hair loss that affects difficult-to-reach areas.

• Follicular unit transplantation (FUT). FUT, also called the strip method, involves surgically removing a strip of scalp tissue from a donor area and dissecting it into individual follicular units for transplantation. This process may be preferred for retrograde alopecia to address severe hair loss, providing a larger number of grafts for restoration in one session. While FUT does leave a linear scar, it’s usually concealed under existing hair, and more of the transplanted hair follicles typically “survive” after you heal.

Both FUE and FUT can be used to restore density in the retrograde pattern of hair loss, especially when they’re used with medical treatments to maintain the hair you have and prevent further shedding.

Retrograde Alopecia Prevention Tips

It’s not always possible to prevent retrograde alopecia. Factors like age, autoimmune disorders, and genetics are out of your control. However, there are things you can try that may help slow the progression of your hair loss and maintain the hair you have, based on what’s typically helpful for androgenetic alopecia:

Try Hair Loss Prevention Shampoo

Products containing ketoconazole or saw palmetto may help prevent further hair loss due to retrograde alopecia and help thicken the hair you have.

One 2023 trial found people with androgenetic alopecia who used a topical saw palmetto oil formulation for 16 weeks reduced hair loss by 22 percent and improved hair density by nearly 8 percent. 

Regular use of topical ketoconazole, an antifungal medication, can also increase hair shaft diameter among people with androgenetic alopecia. Speak with your dermatology provider for personalized product recommendations.

Eat a Wide Variety of Foods

Optimizing your nutrition is a key aspect of your overall wellness and can help prevent many health conditions, including hair loss. 

Get enough protein, iron, zinc, and vitamins that promote hair health by eating a variety of fruits, vegetables, nuts, seeds, whole grains, legumes, and lean proteins. 

Be Gentle With Your Hair and Scalp

Avoid harsh chemicals, excessive heat styling, and tight hairstyles that can stress your hair follicles and promote further damage and loss. 

It’s also important to practice good scalp hygiene. Keep your scalp clean and healthy with regular washing, and consider scalp massage, which can help reduce inflammation and prevent worsened hair loss. 

Keep Stress in Check

We can’t avoid all stress, but making stress-management practices a regular part of your lifestyle can help reduce its negative effects on your health (and your hair). 

Try to incorporate mindfulness techniques, physical activity, spending time in nature, and other calming activities on a daily basis.

FAQs

Is retrograde alopecia reversible?

Retrograde alopecia may be partially reversible, especially if it’s caught early and treated right away with effective hair loss medications like minoxidil or finasteride. These treatments can help slow or stop the progression of retrograde alopecia, and, in some cases, promote regrowth in thinning areas. 

However, if the hair follicles have become severely miniaturized or dormant for too long, successful regrowth may be limited. In these cases, the goal becomes hair preservation and preventing further loss. 

What does retrograde alopecia look like?

Retrograde alopecia shows up as thinning or balding that starts at the nape of the neck or around the sides of the scalp and gradually moves upward. 

Unlike classic male pattern baldness, which typically begins at the hairline or crown, retrograde hair loss affects the lower scalp and may seem like a receding neckline or lower hair density at the back of the head. This pattern of hair loss can start subtly and become more noticeable as the condition progresses.

What stage of the Norwood scale is retrograde alopecia?

Retrograde alopecia is not specifically classified within the traditional Norwood scale, which is mostly used to describe frontal and crown hair loss in male pattern baldness. 

However, retrograde thinning can happen alongside Norwood stages and can indicate a more advanced or aggressive form of androgenetic alopecia.