Alopecia Areata Causes: Unraveling the Mystery Behind Hair Loss

29/08/2023 48 views
Alopecia Areata Causes

Alopecia areata is a mysterious and upsetting disorder that causes localized patches of the scalp or body to lose their hair suddenly. 

While the specific origin of this intriguing hair loss illness is still unknown, experts have made tremendous progress in determining the likely reasons. An in-depth discussion of some of the main causes and probable initiators of alopecia areata is provided in this TH Cosmetic‘s article.

What is Alopecia Areata?

What is Alopecia Areata?
What is Alopecia Areata?

Hair follicles are affected by the common autoimmune skin condition known as alopecia areata, which results in hair loss. The disorder develops when the body’s immune system unintentionally targets its hair follicles, causing them to contract and reduce hair growth. 

Affected people, therefore, have rapid, irregular, patchy hair loss, usually on the scalp, although it can also affect other hair-bearing regions, including the beard, eyebrows, and eyelashes.

The exact cause of Alopecia Areata is not fully understood, but it is believed to be a combination of genetic factors and environmental triggers. It can affect people of all ages, genders, and ethnic backgrounds, and it often starts during childhood or young adulthood.

The development of circular or oval-shaped bald patches on the scalp characterizes Alopecia Areata. The disorder may worsen and cause more significant hair loss (Alopecia Totalis, which is the full loss of scalp hair), or even all body hair (Alopecia Universalis), depending on the circumstances. In certain situations, the hair may regrow on its own.

Types of Alopecia Areata

Types of Alopecia Areata
Types of Alopecia Areata

Alopecia areata is an autoimmune disorder that causes hair loss in specific body areas. There are several different types of alopecia areata based on the pattern and extent of hair loss. Here are the main types:

  • Alopecia Areata (AA): This is the most common type, characterized by round or oval patches of hair loss on the scalp or other body parts. The affected areas may be smooth and hairless.
  • Alopecia Totalis (AT): In this type, there is total hair loss on the scalp, leading to complete baldness of the head.
  • Alopecia Universalis (AU): This is the most severe form of alopecia areata, where hair loss extends beyond the scalp to the entire body, including eyebrows, eyelashes, and body hair.
  • Alopecia Barbae: This type specifically affects the beard area in men, leading to patchy or complete hair loss in the beard.
  • Alopecia Ophiasis: Ophiasis refers to a band-like pattern of hair loss that occurs along the sides and lower back of the scalp. It can be a more challenging form to treat.
  • Diffuse Alopecia Areata: This type is characterized by widespread thinning and hair loss across the scalp, rather than well-defined patches.

What are common Alopecia Areata Causes?

Alopecia areata is a common autoimmune disorder that causes hair loss, typically in small, round patches on the scalp or other body areas. While the exact cause of alopecia areata is not fully understood, several factors have been identified as potential contributors to the development of the condition:

The Immune System Connection

The Immune System Connection
The Immune System Connection

The primary classification of alopecia areata as an autoimmune illness. A robust immune system’s white blood cells (T-cells) defend the body by combating external invaders like viruses and bacteria. 

But in alopecia areata, the immune system wrongly views hair follicles as dangerous and begins fighting them. This attack on the hair follicles disrupts the regular cycle of hair development, resulting in hair loss.

Genetic Predisposition

Alopecia areata develops as a result of genetics. The likelihood of someone developing the illness themselves increases if there is a family history. Alopecia areata susceptibility may be influenced by certain genes that regulate the immune system and hair follicles.

Triggers and Environmental Factors

Various triggers and environmental factors may activate or exacerbate alopecia areata in individuals with a genetic predisposition. These triggers include physical or emotional stress, illness, certain medications, or major life events. Traumatic events, such as surgery or a significant loss, have sometimes been associated with triggering or worsening alopecia areata.

Hormonal Influence

Hormonal Influence
Hormonal Influence

Hormones have been shown to affect both hair growth and thinning. Hormonal abnormalities may affect the development or aggravation of alopecia areata. However, the precise function of hormones in the illness is yet unclear. For instance, several research has shown a connection between alopecia areata and thyroid problems, which can result in hormonal abnormalities.

Medical Conditions

Alopecia areata has been associated with certain medical conditions and underlying factors that can trigger or exacerbate the condition.

  • Autoimmune Diseases: Alopecia areata is an autoimmune disease wherein the body’s immune system mistakenly attacks its hair follicles, causing hair loss. 
  • Thyroid Disorders: Conditions such as hypothyroidism or hyperthyroidism can influence hair growth and may contribute to the development of alopecia areata. Thyroid hormones play a vital role in regulating hair follicle function.
  • Atopic Dermatitis: People with atopic dermatitis, a chronic inflammatory skin condition, may be more susceptible to alopecia areata. The two conditions share some immune-related mechanisms.

Medication and Hair Loss

Certain medications can lead to hair loss; in some cases, they may be associated with the development or worsening of alopecia areata.

  • Chemotherapy: Cancer treatments like chemotherapy target rapidly dividing cells, including hair follicles. Hair loss during chemotherapy is a well-known side effect and is usually temporary.
  • Immunosuppressant Drugs: Medications prescribed to suppress the immune system, such as those used in organ transplant recipients or for autoimmune conditions, can sometimes trigger or worsen alopecia areata.
  • Anticoagulants: Blood-thinning medications like heparin or warfarin have sometimes been linked to hair loss.

Nutritional Deficiencies

Nutritional Deficiencies
Nutritional Deficiencies

Inadequate intake of certain nutrients can affect the health of hair follicles, potentially contributing to alopecia areata.

  • Iron Deficiency: Iron is essential for hair growth, and a lack of iron in the diet can lead to hair thinning and loss. Individuals with alopecia areata may have lower iron levels in their hair follicles.
  • Zinc Deficiency: Zinc is involved in various cellular processes, including hair growth. A zinc deficiency may hinder the normal development of hair follicles and contribute to hair loss.
  • Vitamin D Deficiency: Vitamin D plays a role in hair follicle cycling and differentiation. Low vitamin D levels have been observed in some individuals with alopecia areata.

Inflammatory Factors

Inflammation plays a significant role in the development of alopecia areata. The condition is considered an autoimmune disorder, where the body’s immune system mistakenly attacks its hair follicles, leading to hair loss. Researchers believe certain inflammatory cytokines and immune cells may be involved in this process.

Some studies have shown an association between elevated levels of pro-inflammatory cytokines, such as interferons and interleukins, and the onset of alopecia areata. These cytokines are involved in immune system signaling and regulation. 

Hair Care Practices

Hair Care Practices
Hair Care Practices

Alopecia areata may develop or worsen due to some hair care procedures, especially those that put the hair through physical strain or trauma. The hair shaft or follicles may become weaker due to these procedures, leaving them more vulnerable to harm even if they may not be the main cause of the problem.

Excessive use of heat-producing hairstyling products, tight hairstyles (like braids, ponytails, or cornrows), chemical treatments (such as harsh dyes or relaxers), and hard brushing or combing is a few examples of hair care habits that may affect alopecia areata. 

Infection and Alopecia Areata

Even though infections do not cause alopecia areata, they can either cause it or make it worse. One hypothesis holds that an infection may trigger the immune system in people with a genetic predisposition to alopecia areata, causing it to attack hair follicles wrongly.

According to certain research, Alopecia areata development may be influenced by bacterial or viral infections. For instance, alopecia areata developing following certain viral infections have been made. 

Autoimmune Disorders

The primary diagnosis for Alopecia Areata is an autoimmune condition in which the body’s immune system unintentionally targets its hair follicles. 

Although the precise reason for this misguided immune response is unknown, it is thought to be caused by hereditary and environmental variables. Hair follicles are attacked by immune cells, particularly T-cells, which cause inflammation and ensuing hair loss. 

Age and Alopecia Areata

Age and Alopecia Areata
Age and Alopecia Areata

Although alopecia areata can strike at any age, the condition has a bimodal age distribution, which means that youngsters and young adults and those in their late thirties to forties are frequently affected. 

With an estimated 60% of patients having their first episode before age 20, the illness frequently manifests during childhood or adolescence. 

Gender Variability

Both men and women can develop alopecia areata. However, some data point to gender differences in frequency and clinical manifestation. Studies show that ladies are more likely than males to get alopecia areata. However, the degree and extent of hair loss may vary depending on the gender. 

Women may suffer more localized patches of hair loss (Alopecia Areata) or thinning hair in particular locations, but males may experience more general hair loss or full scalp hair loss (Alopecia Totalis).

Frequently Asked Questions (FAQs)

Can stress really trigger Alopecia Areata?

Although not the only cause of alopecia areata, stress is one among the potential causes. An autoimmune disorder called alopecia areata causes hair loss when the immune system erroneously assaults hair follicles.

In some people, stress may make the illness worse, but it’s not the sole contributing cause. Alopecia Areata is mostly influenced by immune system-related variables as well as genetic predisposition.

Is Alopecia Areata hereditary?

Yes, there is evidence to support the possibility of genetic Alopecia Areata. Your chance of getting the ailment yourself may be higher if it runs in your family. Although the precise genetic pathways are not completely known, having a family member with alopecia areata might increase the probability that other family members will also get the condition.

Are there any natural remedies to prevent hair loss?

Although there is no known treatment for alopecia areata, several natural solutions may aid in promoting hair growth and enhancing scalp health. 

These include of utilizing essential oils like peppermint or rosemary, massaging the scalp to increase blood flow, applying aloe vera gel, and eating a balanced diet that is full of vitamins and minerals needed for healthy hair. It’s important to keep in mind that these treatments might not be effective for everyone, so it’s always better to speak with a healthcare provider for specific guidance.

What medical treatments are available for Alopecia Areata?

Medical therapies for alopecia areata aim to reduce the immunological reaction that attacks the hair follicles. Injections of corticosteroids, topical immunotherapy, minoxidil (Rogaine) application to the scalp, and oral drugs such as JAK inhibitors (Janus kinase inhibitors) like tofacitinib are common therapies. 

The choice of therapy is determined by the degree and severity of hair loss and the individual’s reaction to the treatments.

How can individuals cope with the emotional impact of hair loss?

It can be emotionally difficult to deal with hair loss, particularly in disorders like alopecia areata. People must look for emotional assistance from friends, relatives, or support groups where they may exchange stories and coping mechanisms. 

To deal with any worry or emotional discomfort brought on by hair loss, speaking with a mental health expert might be helpful.

Are there any ongoing clinical trials for new Alopecia Areata treatments?

Clinical trials are continuously being conducted to explore new treatments for Alopecia Areata. These trials may involve novel medications, therapies, or approaches to managing hair loss. 

For up-to-date information on ongoing clinical trials, it’s best to check with reputable medical research websites or consult with a healthcare professional knowledgeable in the field of dermatology.


The causes of alopecia areata are still being actively researched, and various variables may be involved in developing this hair loss disorder. Our comprehension of the complexity behind alopecia areata has substantially increased. 

This includes understanding genetic predisposition, autoimmune and environmental triggers. We can create more efficient therapies and support systems for persons affected with alopecia areata in the future by continuing to understand the complexities of this disorder.

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