Have you noticed a round, bald patch? It could be alopecia areata
Losing between 50 and 100 hairs a day is completely normal. However, when a round patch of hairless skin suddenly appears, concern usually sets in immediately.
Many people think it's due to stress, a lack of vitamins, or even a temporary problem. However, one of the most frequent causes of this type of localized hair loss is alopecia areata, an autoimmune disease affecting millions of people worldwide.
The good news is that, in most cases, the hair follicle does not disappear. Understanding what is happening and receiving a timely diagnosis can make a big difference in managing this condition.
What is alopecia areata?
Alopecia areata is an autoimmune disease. This means that the immune system, whose normal function is to protect the body, mistakenly identifies the hair follicle as a threat and triggers an inflammatory response around it.
As a result, hair growth is temporarily interrupted, and round or oval areas of hair loss appear, usually on the scalp, although the beard, eyebrows, eyelashes, or any other hairy area can also be affected.
Unlike other types of alopecia, the follicle usually remains alive, so hair can grow back when inflammatory activity decreases.
Why does it appear?
To date, science has not identified a single cause. It is considered a disease of multifactorial origin, where different factors are involved.
The most important are:
- Genetic predisposition.
- Alterations in the immune system's response.
- Environmental factors.
- Some triggering events in susceptible individuals, such as viral infections or periods of physical or emotional stress.
It is important to clarify a very common myth: stress does not cause alopecia areata by itself. However, in predisposed individuals, it can act as a trigger.
How to recognize it?
Alopecia areata has very particular characteristics that help differentiate it from other forms of hair loss.
It generally presents as:
- One or more round or oval hairless areas.
- Sudden appearance.
- Normal-looking scalp skin, without significant scarring or flaking.
- In some cases, small broken hairs in the shape of an "exclamation mark" may be observed around the lesion.
Some people also experience nail changes, such as small depressions known as pitting ungueal.
Will the hair grow back?
In many cases, yes.
According to the American Academy of Dermatology (AAD), some people spontaneously recover partial or complete hair growth, especially when the loss is limited.
However, the evolution is highly variable. Some people experience only one episode during their lifetime, while others may experience relapses months or years later.
Therefore, it is important that treatment and follow-up are individualized.
Is there a cure?
Currently, there is no definitive cure for alopecia areata, but there are different treatments that can help control the disease and promote hair regrowth.
The dermatologist will choose the best strategy based on factors such as:
- Patient's age.
- Extent of hair loss.
- Duration of evolution.
- Frequency of relapses.
So… does Minoxidil work?
Yes, but it is important to understand its function.
One of the most common mistakes is to think that Minoxidil eliminates the cause of alopecia areata. In reality, it does not modify the autoimmune process that originates the disease.
What it can do is promote hair growth in some patients when the follicle remains viable.
For this reason, different dermatological guidelines consider that Minoxidil can be used as a complementary treatment, generally accompanied by other therapies indicated by the specialist.
When should you see a dermatologist?
Although any hair loss deserves attention, there are situations where it is advisable to seek medical evaluation as soon as possible.
For example, when:
- The loss appeared suddenly.
- There are several hairless areas.
- Eyebrows, eyelashes, or beard are also affected.
- Hair loss continues to increase over the weeks.
- There is a family history of autoimmune diseases.
An early diagnosis allows differentiating alopecia areata from other types of hair loss and defining the most appropriate treatment.
Where does Oral Minoxidil come in?
Once the dermatologist determines that Minoxidil can be part of the treatment, there are different presentations that can be integrated into the therapeutic plan according to the needs of each patient.
At Pharma Grow, we offer options such as:
These presentations are designed to be part of a hair care routine, always under the guidance of a healthcare professional.
Frequently asked questions
Is alopecia areata hereditary?
There is a significant genetic component, but having a family history does not mean that a person will develop the disease. It is considered a multifactorial disorder involving genetic, immunological, and environmental factors.
Is alopecia areata contagious?
No. Alopecia areata is not transmitted through physical contact, sharing personal items, or living with another person.
Can hair grow back?
Yes. In many patients, hair grows back partially or completely, although some people may experience new episodes over time.
Does stress cause alopecia areata?
Not directly. Scientific evidence indicates that stress is not the cause of the disease, although in predisposed individuals it can act as a triggering factor.
Does Minoxidil cure alopecia areata?
No. Minoxidil does not eliminate the autoimmune origin of the disease. In some patients, it can promote hair regrowth as part of a comprehensive treatment indicated by the dermatologist.
Understanding the cause is the first step
Alopecia areata can appear unexpectedly and raise many questions, but it is also one of the forms of hair loss that has advanced the most in research in recent years.
Knowing what causes it, how to recognize it, and what therapeutic options exist allows for informed decisions and visiting a specialist at the right time.
At Pharma Grow, we believe that a good hair care routine begins with evidence-based information. Because understanding the origin of hair loss is as important as choosing the correct treatment.