Male-pattern hair loss, also called androgenic alopecia, is the most common type of hair loss in men.

According to scientific evidence, 50% of men experience this type of hair loss at some point in their lives.

Androgenic alopecia can also occur in women, but unlike men, hair loss very rarely follows an progressive course to leave a large area of bald scalp. Androgenic alopecia seen in women usually occurs after menopause.

Factors like enlarged prostate, high blood pressure, diabetes, and obesity can cause androgenic alopecia.

However, advanced age and genetic factors are the key factors in male-pattern hair loss.


A densitometer is a tool to measure hair density prior to hair transplant in deciding whether or not a candidate is suitable for hair transplant.

Densitometry is a method that examines the scalp under magnification to obtain information on hair density and follicular unit per square centimeter.

This number helps the surgeon determine how many grafts will be required in the procedure. It also measures the patient’s hair quality (the degree of loss of quality at the hair follicles) and helps predict future hair loss.


Hair grafts, hair follicles, and hair roots are often confused with each other. These concepts are one of the greatest source of confusion when someone begins to consult with a doctor regarding hair transplant surgery.

A hair graft contains a number of different hair follicles and a small amount of skin. In other words, let us say you receive 2500 grafts in hair transplant; it does not mean that 2500 hair roots are transplanted in your donor site, because most grafts usually contain more than one hair root.

While hair grafts and hair follicles mean the same thing, hair root is a different concept.


The donor site, also called donor region or area, is the lower back of the head of the head, where the hair grafts are collected for hair transplant.

The hair in this area is genetically programmed to resist hair loss and so it is least affected from male-pattern baldness. If the donor area fails to produce quality hair for transplant, other regions of the body can be used as a donor site to harvest hair follicles.

As the DK Klinik hair transplant unit, we do not recommend and use any region other than the back of head as donor site because the hair collected from other areas will not have the same character and quality.

During hair transplant surgery, hair follicles are harvested from the donor site and transplanted to the balding areas, which are called recipient sites.


It is an indicator of hair strand thickness. It is determined by measuring the diameter of a hair strand. Thick hair can offer better results and appearance than thin hair.


Each hair root contains around 1 to 4 hair strands and is surrounded by a capsule called root sheath. A follicular unit is composed with the addition of other structures, including a special vein and nerve network, muscles, and sebaceous glands.

Extracting hair strands from a follicular unit and transplanting them individually is not a healthy method. The group of hair in the follicular unit should be transplanted as a group.


In Follicular Unit Extraction (FUE) method, hair transplant surgery involves harvesting hair follicles one by one through a punch biopsy tool from the donor site and transplanting them to the bald areas of the scalp one by one.

In order to produce the desired appearance, the FUE technique should take into account many factors such as several factors such as the number of available grafts, the exit angles and direction of the hair. Contrary to the FUT technique, the FUE does not require a large incision in the scalp. Click here for more detailed information about the FUE method.


In FUT method, unlike the FUE, hair follicles are not harvested from the donor site one by one but in clusters of follicles, or a thick donor strip about 1 to 1.5 cm in width and 10 to 20 cm in length removed from the scalp.

As it is more invasive and requires much larger incision, it leaves larger scars on the scalp. In the FUT method, the hair roots are extracted from the strip one by one using a scalpel.

Therefore, the most obvious difference between the FUE and the FUT is the way the surgeon collects the hair follicles. In modern medicine, the FUT method is gradually abandoned and the FUE method is becoming a more preferred technique.


These are the tiny secretory cavities containing hair roots consisting of 1 to 4 hair strands. A frequently used term in hair transplant industry, hair follicle is often used interchangeably with the term graft, which is described above.

Actually, a graft is composed of a follicular unit and a hair follicle. The hair grows in a hair follicle.


In about 5% of hair transplant patients, a temporary hair loss (in almost all cases) can occur after the surgery.

The hair that sheds after the surgery begins to grow back after 3 months on average. Shock loss is a reaction of the body to the local trauma caused by hair transplant surgery.

It may occur in both FUE and FUT methods. Hair transplants done in inexperienced centers run a higher risk of shock loss.


A punch biopsy pen is a medical instrument used to collect hair follicles from the scalp in hair transplant. The diameter of the cutting apparatus in the tip of the punch biopsy pen can be adjusted according to the donor site.


The macrograft technique is one of the milestones that revolutionized hair transplant because modern hair transplant began with the use of macrograft technique by the dermatologist Norman Orentreich in 1959.

In this technique, the hair roots were harvested from the lower back of head through large punches ranging from 5 to 10 mm and directly transplanted to the recipient sire without any special treatment to the roots. That enabled the transplantation of 8 to 12 hair strands at each time. This technique, which was used before the FUT method, was causing an unnatural looking appearance after the transplant.

In the beginning of the 1980s, there was a development revolutionizing hair transplant scene called micrograft method and it enabled much more natural appearance in hair transplantation. The most common transplant methods of today, the FUE and FUT techniques are in the micrograft category.


The frontal hairline is the point where hair meets the forehead. When designing the frontal hairline, the patient’s facial features should be taken into consideration.

Apart from that, other criteria such as gender, age, amount of hair loss are also important. A correct frontal hairline design by the surgeon prior to the transplant plays a key role in the natural appearance that could be achieved.

Designing a hairline too low or too high on the forehead will cause unnatural appearance.


The Norwood-Hamilton scale is a measurement system used to classify the extent of male-pattern hair loss.

The scale classifies hair loss into 7 types, type 1 being the minimal hair loss and type 7 extensive hair loss. Hair loss at stage 5 or over cannot be reversed or stopped with the existing medications; only a hair transplant could offer a permanent solution.


The Ludwig grading system is a measurement tool used to classify the degree of female pattern hair loss. It differs from the grading system used for the classification of male-pattern hair loss in that it has only 3 stages. Stage I means mild hair loss, Stage II moderate and Stage III extensive hair loss.


An androgenic hormone, DHT (dihydrotestosterone) is a hormone that stimulates the development of male characteristics. Testosterone is converted into DHT hormone by enzymes and DHT hormone plays vital roles in men’s metabolism from adolescence to adulthood.

As men age, the receptors in hair follicles that are sensitive to DHT hormone cause hair to fall off. Men with the same level of DHT hormone may or may not suffer the same degree of hair loss.

This is because of the individual differences in the receptors of this hormone in the hair follicles. In some people, their body responds to this hormone on a higher level so they begin to experience hair loss. The drugs taken to prevent hair loss are intended to suppress the activity of DHT hormone.


Hair follows a specific life cycle with three phases: anagen, catagen, and telogen phases. In anagen phase, the hair features a period of development and rapid growth. When the catagen phase begins the hair stops growing and stays the same for some time. In the telogen phase, the hair is removed from the body.

The hair strands in one region may be in different phases of this cycle. Therefore, some of our hair may be in the anagen phase, while others are in the telogen phase.

Everyone’s hair life cycle is different so the most important factor determining after how long one’s hair grows back following hair transplant is the person’s hair life cycle.


Local anesthesia is a type of anesthesia administered to prevent the patient from feeling pain in small surgical procedures. Prior to hair transplant surgery, the doctor injects local anesthetics into the donor and recipient sites.

After the local anesthesia procedure, the patient remains fully conscious, which significantly lowers the risk of any complications as compared to general anesthesia.