Introduction
Alopecia Areata is a chronic immune-mediated type of autoimmune disease involving the hair follicle, nail, and sometimes the retinal pigment epithelium. This condition attacks the person’s hair follicles in the anagen and causes hair loss but does not permanently damage the follicles. Alopecia areata is caused by an autoimmune disorder of the normal hair cycle that causes loss of immune privilege in the hair follicles.
Alopecia Areata is usually considered to be discrete areas of hair loss on the scalp, developing over a period of weeks. The classic presentation of Alopecia Areata is of isolated, smooth, sudden, non-scarring, patchy loss of hair on the scalp or any other area of hair growth. It is a chronic, relapsing condition with episodes of hair loss that require both psychological support and medical treatment, although many individuals experience spontaneous regrowth of hair within 1 year. There are a number of different treatments available to help control the severity and the length of time of the hair loss including corticosteroids, immunotherapy, Janus kinase (JAK) inhibitors and topical solutions.
Global Prevalence
With a prevalence of about 1/1000, the lifetime risk of getting Alopecia Areata in the general population is estimated to be 2% [1]. Both adults and children can develop Alopecia Areata, and the condition's prevalence progressively rises with age. For males and females, the average age of onset is 32 and 36 years, respectively.
Vitiligo, lupus erythematosus, psoriasis, atopic dermatitis, thyroid disease, and allergic rhinitis are among the dermatological and systemic disorders that have been linked to Alopecia Areata.
Hair Cycle & Science Behind Alopecia Areata
Anagen, catagen, and telogen are the three stages of the hair cycle. While the proximal end of the hair shaft is keratinised during the catagen phase, the hair is actively developing during the anagen phase. The remaining proximal end then experiences apoptosis, and the hair follicle falls out. The time between the old follicle's regression and the start of the subsequent anagen is known as the telogen.
During the anagen phase, hair grows in six stages. The completely developed anagen follicle is stage VI. Alopecia Areata, on the other hand, causes abrupt hair loss and a lack of hair regeneration because the hair follicles are stalled in stage III or IV and prematurely return to the catagen or telogen phase.
Types Of Alopecia Areata
Alopecia Areata can occur in different types or forms and they cause different amounts of hair loss. It usually presents as a patchy, isolated loss of hair. 
There are three main types of Alopecia Areata [2]:
1. Alopecia Areata (Patchy): This patchy hair loss is characterized by one or more round or oval patches on the scalp or other hair-bearing areas of the body. The condition may progress to alopecia totalis (hair loss over the entire scalp) or alopecia universalis (hair loss over the whole body).
2. Alopecia Areata Totalis: Alopecia totalis causes hair loss over the entire scalp.
3. Alopecia Areata Universalis: It is a condition that causes hair loss all over the body including eyebrows and eyelashes.
Other Types of Alopecia Areata:
1. Diffuse Alopecia Areata: Diffuse alopecia areata is the sudden, unexpected thinning of hair over the entire head. It is difficult to diagnose because it looks like other types of hair loss, such as telogen effluvium or male or female pattern hair loss.
2. Ophiasis Alopecia: Hair loss is in the form of a band around the sides and back of the head.
Pathophysiology
The onset of Alopecia Areata is strongly associated with the loss of immune privilege in hair follicles, resulting in immune dysregulation. Current evidence suggests that the cause of the condition is autoimmune, with a substantial genetic contribution, further modified by unknown environmental factors. Reported triggers include emotional or physical stress, vaccinations, viral infections and medications. These triggers initiate the loss of immune privilege through inhibition of the synthesis of 2 anti-inflammatory cytokines, transforming growth factor-β (TGF-β) and α-melanocyte–stimulating hormone (α-MSH). They also induce expression of the major histocompatibility complex class I (MHC-I) polypeptide-related sequence A (MICA) on hair follicles. Then natural killer (NK) cells are activated and subsequently secrete interferon-γ (IFN-γ) and interleukin-15 (IL-15).
IFN-γ upregulates MHC-I protein expression on the hair follicle cells and exposes antigens that were previously hidden to T cells. IL-15 inhibits T-regulatory-cells, IFN-γ and IL-15 activate target immune cells through the JAK signal transducer and activator of the transcription (JAK-STAT) signalling pathway. This causes inflammatory cells to attack the matrix epithelium of the hair follicle in early cortical differentiation or anagen hair follicles and causes a premature transition into the catagen or telogen phase. 
Causes Of Alopecia Areata
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Alopecia Areata is an autoimmune disease, meaning your immune system attacks your body. Your immune system attacks your hair follicles because it believes they are foreign invaders like bacteria, viruses, parasites or fungi that cause infection, illness and disease.
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It makes your hair fall out. Usually in clumps the size and shape of a quarter. The degree of hair loss varies. Sometimes, it's just in a few places. In others, hair loss may be more significant, including complete hair loss.
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Your genetic makeup (the components of your cells that determine your physical traits, such as eye color, height or hair color) [3] may set off your body’s autoimmune response.
Diagnosis
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Alopecia Areata is often diagnosed clinically using a patient's medical history and physical examination.
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Individual skin patches of Alopecia that grow quickly and frequently have little erythema should raise clinical concerns.
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Dermoscopy is a useful supplementary diagnostic technique for diagnosis confirmation.
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Broken hair, yellow dots, black dots, exclamation point hairs, and short vellus hairs are early indicators of regrowth. The lack of hair follicles indicates cicatricial or scarring Alopecia. You can do a hair pull test to verify active hair loss.
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Results from examining the nails may also confirm the diagnosis.
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A skin biopsy at the edge of an active area of hair loss may be helpful if the diagnosis is unclear.
Management and Treatment of Alopecia Areata
Spontaneous regrowth of hair occurs within a year in about half of patients with Alopecia Areata without treatment. First-line therapies for those seeking intervention include intralesional and topical corticosteroids. Topical betamethasone is often used, especially in children, but should be discontinued if there is no improvement after 3 months. For more severe cases, topical immunotherapy or oral JAK inhibitors may be more effective.
A meta-analysis found contact immunotherapy can help 74.6% of patients with patchy Alopecia to regrow their hair [4]. Alopecia Areata requires continued treatment for progress. Other therapies include systemic glucocorticoids and minoxidil. You may need emotional support as the illness can make you anxious and sad.
Herbal Remedies For Hair Loss
Hair loss is traditionally treated with minoxidil and finasteride. These therapies are readily available; however, they have been associated with several adverse effects including scalp irritation, sexual dysfunction, and increased risk of prostate cancer. This led to the increasing interest in the use of natural and herbal remedies for hair loss.
Herbal remedies have been trusted for centuries for hair growth and prevention of hair loss [5]. These remedies are assumed to have a lesser side effect compared to conventional drugs; however, there is no well-established data on their safety and efficacy.
The potential of herbal remedies for hair loss treatment has been discussed in different studies and the combination of herbal extracts, for example saw palmetto (SP) and beta-sitosterol, drastically improve hair density and quality in men with Androgenetic Alopecia (AGA) was reported by Prager et al. Esfandiari and Kelly reported that topical application of green tea extracts improved hair density and thickness in women with pattern hair loss. Moreover, studies on pumpkin seed oil (PSO) prove its blocking action of 5-alpha reductase, an enzyme that converts testosterone to dihydrotestosterone (DHT), implicated in hair loss. In addition, Cho et al. found that PSO administration for 24 weeks increased hair count compared to placebo administration.
In addition to medical treatment and dermatological care, supportive scalp care can help to optimize the scalp environment and support healthier hair growth. Ethniq Skin Revive Spray is a patented plant-based formula to help the scalp to those suffering from Alopecia Areata.
A clinical study on patients suffering from Alopecia Areata showed very promising results for the Ethniq Skin Revive Spray:
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Severity of Alopecia Tool (SALT) score increased from 41.01 to 12.89.
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Visible hair regrowth was significant.
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Photographic evaluation improved.
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Participants reported increased confidence and quality of life.
Conclusion
Alopecia Areata is an autoimmune disease where the immune system attacks healthy hair follicles, resulting in patchy or diffuse hair loss. The course of the condition is unpredictable and can recur, but early diagnosis and treatment can improve the chance of hair regrowth and help to halt the progression of the disease. A comprehensive management plan that involves medical treatments, supportive scalp care, stress management and regular follow-up visits to a dermatologist can aid people to achieve better outcomes. Emerging evidence also points to plant-based supportive formulations like Ethniq Skin Revive Spray as complementary treatments by promoting a healthier scalp environment and supporting hair regrowth. But quick treatment and continued care can help many with Alopecia Areata successfully cure the disease and restore their confidence in appearance.
Frequently Asked Questions (FAQs)
1. What is Alopecia Areata?
Alopecia Areata is an autoimmune disease that happens when the immune system attacks healthy hair follicles, leading to sudden, patchy hair loss on the scalp or other areas of the body.
2. Is Alopecia Areata permanent?
Not all the time. Hair often grows back on its own over a period of months to a year for many people. But the condition can return and some people may need ongoing treatment to manage flare-ups.
3. Can you give Alopecia Areata to another person?
Alopecia Areata is not contagious. You cannot catch alopecia areata from someone else by touching them, sharing personal items or being near them.
4. What causes Alopecia Areata?
Although the exact etiology is not completely understood, common triggers include genetic predisposition, emotional or physical stress, viral infections, certain medications, and immune system dysfunction.
5. Will your hair grow back after Alopecia Areata?
Yes, with early diagnosis and proper treatment, hair regrowth is possible. Depending on the severity, treatment options may include corticosteroids, topical immunotherapy, JAK inhibitors or supportive scalp care.
6. How do doctors diagnose Alopecia Areata?
A diagnosis of Alopecia Areata is usually made by a dermatologist through physical examination, history, and dermoscopy. Sometimes a hair-pull test or scalp biopsy is needed to confirm the diagnosis.
7. Does stress make Alopecia Areata worse?
Yes, Alopecia Areata can be triggered or worsened by emotional and physical stress in some people. Flare-ups can be minimized with stress management techniques like regular exercise, meditation, sufficient sleep, and counselling.
8. What does Skin Revive Spray do for Alopecia Areata?
Skin Revive Spray is a plant-based supportive scalp care formulation that helps to maintain a healthy scalp environment. Clinical studies show improvement in Severity of Alopecia Tool (SALT) scores, visible hair regrowth and patient quality of life when used as part of a comprehensive hair care regimen.
References:
1. https://pmc.ncbi.nlm.nih.gov/articles/PMC12833698/
2. https://www.naaf.org/alopecia-areata/types-of-alopecia-areata/
3. https://www.niams.nih.gov/health-topics/alopecia-areata
4. https://pmc.ncbi.nlm.nih.gov/articles/PMC6233743/
5. https://pmc.ncbi.nlm.nih.gov/articles/PMC12324729/