Senior man and hair loss issue

Androgenetic alopecia is a common form of hair loss in both men and women. It affects up to 50% of the population and can start as early as the teenage years. The condition occurs when testosterone, an androgen hormone, interacts with enzymes at the follicle level causing miniaturization or shrinking of the follicles, resulting in thinner hairs that eventually stop growing altogether. 

Commonly known as male pattern baldness or female pattern baldness, it progresses slowly over time in a predictable pattern. Treatment options vary depending on severity but may include topical medications or surgery such as scalp pigmentation or hair transplantation. Although there is no cure for androgenetic alopecia, its effects can be managed with proper care and attention.

History and Definition

Androgenetic alopecia (AGA) is a common type of hair loss that affects both men and women. Its name has roots dating back to ancient Greece, with “alopex” coming from the Greek word for fox, referring to the fur loss seen in fox mange. “Areata” is derived from the Latin word “area” meaning an empty space or patch.

The term “alopecia area” was first used by Polish physician John Jonston in 1664, in his book “Medicina Practica”. French physician Sauvages de Lacroix later introduced the term “alopecia areata” in 1763, classifying it into four categories: areata, simplex, syphilitica, and volatilium. Alopecia areata was used as a descriptive term for patchy hair loss caused by various conditions, including ringworm and leprosy.

AGA is caused by a combination of hormones and genetics and is characterized by the progressive miniaturization of hair follicles, leading to a reduction in hair diameter and length. This type of hair loss often presents as a diffuse thinning of the scalp hair or as a receding hairline in men (male pattern baldness). AGA affects millions of people and can have a significant impact on an individual’s self-esteem and quality of life.


Androgenetic alopecia (AGA) is characterized by the gradual thinning of hair on the scalp. The most common symptoms of AGA include:

  • Gradual hair loss: AGA typically starts with a slow and steady loss of hair, which may become more noticeable over time.


  • Receding hairline: In men, AGA often presents as a receding hairline, also known as male pattern baldness.


  • Thinned crown: In both men and women, the crown of the scalp may also become thinner.


  • Widened part: The part in the hair may become wider, as the hair thins on the scalp.


  • Complete baldness: In severe cases, hair loss can progress to complete baldness.

It is important to note that these symptoms may not occur in every individual with AGA and may vary in severity. If you are concerned about hair loss, it is best to consult a dermatologist or a plastic surgeon for a proper diagnosis and appropriate treatment options.


Androgenetic alopecia (AGA) is a genetic condition that causes hair loss. It is believed to be caused by a combination of factors, including a sensitivity to the hormone dihydrotestosterone (DHT), which is produced by the conversion of testosterone in hair follicles, and a genetic predisposition to hair loss. This sensitivity causes the hair follicles to shrink and produce finer, shorter hairs until they eventually stop producing hair altogether.


The diagnosis of androgenetic alopecia (AGA) is usually based on medical history, physical examination, and clinical observation of the pattern of hair loss. Your doctor may also perform a scalp biopsy to rule out other causes of hair loss such as fungal infections, autoimmune disorders, or nutritional deficiencies. 

Blood tests to measure hormone levels and check for underlying medical conditions may also be performed. In some cases, a dermatologist or a plastic surgeon may use a tool called a phototrichogram, which involves taking photographs of the scalp to track hair growth over time. The diagnosis of AGA is typically made after a thorough evaluation and exclusion of other potential causes of hair loss.


The treatment of androgenetic alopecia depends on the severity of the hair loss and personal preference.


Minoxidil and finasteride are two medications that are commonly used to treat androgenetic alopecia. Minoxidil is a topical solution that is applied to the scalp, while finasteride is an oral medication.


  • Hair transplant: A hair transplant is a surgical procedure that involves transplanting hair follicles from one part of the scalp to the balding areas. This procedure can produce permanent results.


  • Scalp reduction: Scalp reduction is a surgical procedure that involves removing a section of the scalp and pulling the remaining scalp together to reduce the size of the balding area.


  • Scalp micropigmentation: Scalp micropigmentation is a non-surgical procedure that involves tattooing the scalp with pigment to create the appearance of a fuller head of hair.

After a hair transplant or scalp reduction surgery, it is normal to experience some swelling, redness, and tenderness in the treated area. Pain medication can help manage any discomfort. Most people can return to work within a few days after the procedure, but strenuous activities should be avoided for several weeks.

Risk Factors

The following are the risk factors associated with androgenetic alopecia:

  • Genetics: Androgenetic alopecia tends to run in families, so if you have a family history of hair loss, you may be at an increased risk of developing it yourself.


  • Age: Androgenetic alopecia is more common in people over the age of 50, but it can occur at any age.


  • Hormonal factors: Androgens, male hormones that are present in both men and women, can contribute to hair loss in people with androgenetic alopecia.


  • Gender: Androgenetic alopecia is more common in men than women, but women can also develop this type of hair loss.


  • Medical conditions: Certain medical conditions, such as thyroid disease, iron-deficiency anemia, and autoimmune disorders, can increase the risk of androgenetic alopecia.


  • Medications: Certain medications, such as those used to treat high blood pressure, depression, and gout, can cause hair loss as a side effect.


  • Stress: Chronic stress can cause hair loss and may worsen the symptoms of androgenetic alopecia.

It is important to note that not all of these risk factors will affect everyone with androgenetic alopecia and that not everyone with these risk factors will develop androgenetic alopecia. If you are concerned about hair loss, it is best to speak with a doctor, a dermatologist, or a plastic surgeon to determine the best course of action for you.


Androgenetic alopecia can have an impact on a person’s emotional well-being and self-esteem. Some of the potential emotional and psychological effects of androgenetic alopecia include:

  • Low self-esteem: Hair loss can cause people to feel self-conscious or embarrassed, leading to low self-esteem and a decrease in confidence.


  • Depression: People with androgenetic alopecia may experience feelings of sadness or depression related to their hair loss.


  • Social isolation: Hair loss can cause people to withdraw from social situations and limit their activities, leading to feelings of isolation.


  • Negative body image: People with androgenetic alopecia may develop negative feelings about their appearance, which can affect their overall body image and self-esteem.

In rare cases, hair transplant surgery or scalp reduction surgery for androgenetic alopecia may result in complications, such as infection, scarring, and loss of sensation in the treated area. It is important to speak with a doctor before undergoing any type of hair loss treatment to understand the risks and potential benefits.

When to See a Doctor

If you are noticing thinning hair or bald spots and believe you may have androgenetic alopecia, it is best to consult with a doctor. A visit to the dermatologist or plastic surgeon can help accurately identify the type of hair loss and develop an appropriate treatment plan. The earlier you seek professional care, the better the chances of successful treatment.

Your doctor may recommend medications or other options such as platelet-rich plasma therapy to stop further hair loss and promote new growth. It’s important to follow your doctor’s instructions carefully and attend all follow-up appointments for monitoring and evaluation.

With proper diagnosis and treatment, it is possible to slow down or even reverse the effects of androgenetic alopecia.  If you are concerned about hair loss, don’t hesitate to see a doctor for an evaluation. An early diagnosis can help ensure the best possible outcome.

Step-by-Step Guide to Carpal Tunnel Syndrome Treatment

Androgenetic alopecia, or male-pattern baldness, is a common condition that can cause hair loss in both men and women. Treatment for this condition may include a combination of medications, surgical procedures, lifestyle changes, and other therapies.


The first step to treating androgenetic alopecia is to consult with a medical professional who specializes in hair loss. During your consultation, you’ll discuss your medical history and any risk factors that could be contributing to your hair loss. Your doctor will also assess the extent of your hair loss and determine the best treatment options for you.

Choosing the Right Treatment

Medication is one potential treatment option for androgenetic alopecia. Finasteride (Propecia) is an oral medication that has been found to be effective in slowing down hair loss. Minoxidil (Rogaine) is another oral medication that can help stimulate hair growth in some cases. These medications may take up to three months before any noticeable effects are seen, so patience is key when taking these drugs.


Surgical procedures, such as follicular unit extraction (FUE), are also used to treat androgenetic alopecia. This procedure involves harvesting individual hair follicles from the back and sides of your head and transplanting them into the area with thinning or balding patches. This surgical procedure offers long-term results but requires several sessions to achieve desired results.

Post Instructions

In addition to medications and surgery, lifestyle changes and other therapies can also help with androgenetic alopecia. Eating a balanced diet, reducing stress, getting enough sleep, and avoiding smoking are all beneficial lifestyle modifications that may help slow down hair loss. Hair growth supplements such as biotin or saw palmetto may also be used to promote hair health and reduce shedding. 

Treating androgenetic alopecia requires consistency and patience. Working closely with your doctor to develop a personalized treatment plan is the best way to ensure success in managing this condition. With proper care and treatment, you can see results over time and enjoy healthier-looking hair for years to come.


In conclusion, androgenetic alopecia (AGA) is a common type of hair loss that affects both men and women. While there is no cure for this condition, there are treatments available that can help to slow down the progression of hair loss or even regrow some of the lost hair. It’s important to speak with your doctor about whether these treatments are right for you so that you can develop an appropriate plan for managing your condition. Don’t be afraid to reach out for help – AGA is a treatable condition with many potential solutions!


Experience counts when it comes to Cosmetic, Plastic and Reconstructive surgeries—so look no further than Dr. Colin Hong. With over 35 years of experience in the field and some of the most affordable rates in Toronto, North York and Markham, you can trust him with your hair restoration needs.

If you’d like to set up a consultation for androgenetic alopecia treatment with Dr. Hong, please contact his office at (416) 222-6986 or send an email to with your full name, email address and phone number so we can get back to you quickly. Don’t forget to obtain a referral from your family doctor before booking an appointment!

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