2026-07-22
Yeoksam Station Dermatology: There's a Reason for Sudden Alopecia Areata
Discover why alopecia areata appears suddenly and how to approach treatment effectively at Yeoksam Station Dermatology.

Yeoksam Station Dermatology: There's a Reason for Sudden Alopecia Areata
‘There's a circular bald spot.’‘I'm embarrassed because it happened overnight.’
Hello.
I am Kim Da-jung, the chief physician at Cordia Clinic.

[Premium Hair Loss Treatment] Chief Physician Kim Da-jung, Cordia Clinic | ||
<1:1 Customized Diagnosis> Based on tens of thousands of clinical data, Precise concentration and surgical skills perfected through surgical training | ||
Accurate analysis based on 3D AFS precise diagnosis | ||
Sustainable hair loss treatment completed with a low-pain system |
In fact, most people who visit Yeoksam Station Dermatology due to such changes first ask, ‘Is this serious?’
When hair suddenly starts falling out, anyone would be surprised, and you can't help but feel more anxious, especially when it appears as unexplained circular bald spots.
So today, I will easily explain why alopecia areata suddenly occurs and what criteria should be used to determine the direction of treatment.
Alopecia Areata: There's a Reason for Sudden Onset
General hair loss often progresses slowly.
However, alopecia areata can feel like it appeared suddenly one day.

This is often because our body's immune response temporarily loses its balance, rather than the hair follicles weakening.
Simply put, immune cells, which are supposed to only attack external viruses, mistakenly identify and attack hair follicles at some point.

This results in rapid hair loss and a characteristic circular, well-defined bald spot.
In such cases, approaching it from the perspective of nutritional deficiency or aging, like with general hair loss, can lead to the wrong treatment direction, so early assessment is crucial.
Why Should We Look at the Cause First?
Alopecia areata is often not just a scalp problem.
Factors such as stress, lack of sleep, hormonal changes, and accumulated fatigue often disrupt immune balance, leading to its onset.
Therefore, dermatologists should not only look at the visible areas.

We first confirm these aspects, such as the extent, hair follicle density, surrounding scalp condition, and presence of inflammatory reactions, using data from 3D AFS scalp imaging.
Knowing the current stage helps prevent overtreatment or, conversely, missing crucial aspects.
Early Intervention Determines the Outcome
Alopecia areata has a relatively high chance of recovery, but if the timing is missed, the affected area can expand.
However, fortunately, the possibility of recovery is relatively high.
However, it's important not to miss the timing.
In the early stages, it often appears in only one area, but if left untreated, it can spread or multiply into several patches.
Conversely, early intervention often leads to a recovery trend within a short period.

Therefore, an approach of ‘let's check it out’ rather than ‘should I wait and see?’ is wise.
This is How Treatment Should Be Approached
‘Do I just need injections?’
Alopecia areata is not a condition that can be resolved with a single method.
It's often not just a hair loss problem but also involves immune reactions, inflammatory processes, and changes in the scalp environment.

Therefore, at Yeoksam Station Dermatology, we first analyze the current condition and then design the treatment direction accordingly.
Basically, we proceed with treatment centered around Cordia hair follicle injections.
To explain simply, necessary ingredients are delivered directly to the area around the hair follicles in the scalp, stabilizing the sensitive inflammatory response.
You can understand this process as creating an environment where growth signals can be transmitted normally again.
Especially for alopecia areata, scalp surface management alone often has limitations, so direct treatment to the layer where hair follicles are located can be important.

In other words, hair follicle injections have the advantage that necessary ingredients can be delivered much more directly than existing topical agents or scalp care products.
However, what's important is not to repeat the same injection, but to apply treatment that matches the current type and progression of the condition.
‘Detail’ is Important in Procedures
In fact, as important as the ingredients is where, how much, and in what manner they are injected.
At Yeoksam Station Dermatology, based on surgical training, we meticulously control the injection depth, interval, and direction.

And regarding the pain that many people worry about, we are also careful to reduce discomfort by adjusting aspects such as anesthesia methods according to the scalp condition.
That's why many people say, ‘It was better than I expected’ after the procedure.
Why Customized Design is Important
Even if hair loss has the same name, the causes, progression speed, and responses are all different.
Therefore, we provide customized designs for each individual, including the type and frequency of treatment, based on 3D examination results.

This is because for some, injections alone are sufficient, for others, immune modulating therapy must be combined, and in still other cases, lifestyle management is more crucial.
Distinguishing these ultimately makes a difference in the results.
Hair loss can start suddenly, but it is also a condition where a good outcome can be achieved with quick response.
Therefore, rather than searching and judging on your own, it's important to first confirm what stage your current condition is in.
That said, there's no need to be unnecessarily scared, nor is it a problem to simply overlook.

During ambiguous periods, it's crucial to set the right direction, so if you're currently struggling with a similar problem, I hope you'll feel comfortable visiting Yeoksam Station Dermatology to at least have your condition checked.
The next steps can be decided together at that time, and if you have any questions, please feel free to ask.
May 7, 2026 Cordia Clinic OPEN To provide sufficient consultation to each patient, we operate on a 100% reservation basis. |
Mon · Tue · Thu · Fri : 11:00 ~ 20:00 (Lunch break : 14:00 ~ 15:00) Saturday : 10:00 ~ 16:00 (No lunch break) | ||
6th Floor, KR Tower, 429 Seolleung-ro, Gangnam-gu (Seolleung Station Exit 3) | ||
02-568-8575 |
Frequently Asked Questions
Why does alopecia areata suddenly appear?
Alopecia areata often appears suddenly not because hair follicles are weak, but because the body's immune response temporarily loses balance, causing immune cells to mistakenly attack hair follicles.
How is alopecia areata diagnosed?
At Cordia Clinic, we diagnose the current condition by precisely checking the extent of hair loss, hair follicle density, surrounding scalp condition, and presence of inflammatory reactions using data from 3D AFS scalp imaging.
How is alopecia areata treated?
Alopecia areata cannot be solved by a single method; after analyzing the current condition, the treatment direction is designed around Cordia hair follicle injections. Hair follicle injections directly deliver necessary ingredients around the hair follicles to stabilize inflammation and create a growth environment.
What is the pain like during alopecia areata treatment?
Yeoksam Station Dermatology Clinic focuses on reducing pain by adjusting anesthesia methods according to scalp conditions. Many people say, "It was better than I expected" after the procedure.
Is alopecia areata a treatable disease?
Yes, alopecia areata has a relatively high chance of recovery. However, it is important to intervene early without missing the timing, as neglecting it can lead to a wider area of hair loss.
Is alopecia areata treatment personalized?
Yes, based on the 3D scan results, personalized designs are made for each individual, including the type and frequency of treatment. In addition to injection therapy, immune modulation therapy or lifestyle management may also be necessary.