Understanding Different Types of Alopecia (August 2026)

Hair loss is more common than many people realize. A 2025 Canadian alopecia consensus reports that male pattern baldness affects up to 50% of men, with four out of five men experiencing some degree of balding by age 70. Up to 40% of Canadian women also experience thinning hair by age 50.

While accepting hair loss can be challenging, understanding the different types of alopecia and their underlying causes is an important first step. This knowledge can help you have informed conversations with healthcare providers about your specific situation.

Before reviewing options with a healthcare professional, learn about the various types of alopecia to better understand your condition.

TLDR:

• Up to 50% of men experience male pattern baldness, with 4 in 5 affected by age 70.
• Six distinct types of alopecia exist, each with different causes, patterns, and reversibility.
• Cicatricial alopecia causes permanent follicle destruction; early evaluation by a licensed healthcare provider is key.
• Telogen effluvium is typically temporary and resolves once you identify and treat the underlying trigger.
• Men's online health clinics in Canada connect you with licensed healthcare providers for private, text-based hair loss assessments.

Androgenetic Alopecia (Male and Female Pattern Hair Loss)

Androgenetic alopecia is a gradual condition that often begins affecting men after puberty. It is commonly known as male pattern baldness.

This type of alopecia causes progressive hair thinning and eventual hair loss, typically starting at the hairline and moving backward. This pattern often creates an "M" shape at the temples, while the circular area on the back of the head, called the vertex or crown, also experiences thinning.

Key Characteristics

• Progressive and gradual
• Genetic predisposition
• Hormone-related (associated with dihydrotestosterone or DHT)
• Follows predictable patterns
• Affects both men and women, though patterns differ

Understanding the Mechanism

Androgenetic alopecia is associated with the hormone dihydrotestosterone (DHT), an androgen that can cause hair follicles to shrink over time. This process, called miniaturization, leads to progressively shorter and finer hair until follicles eventually stop producing visible hair.

Because this condition is progressive and often has a genetic component, early consultation with a healthcare provider can be valuable for understanding your individual situation and discussing personalized approaches.

Alopecia Areata (Autoimmune Hair Loss)

Unlike pattern baldness, which often has a hereditary link, alopecia areata can develop spontaneously at any age. It is an autoimmune condition in which the body's immune system mistakenly attacks hair follicles. This results in patchy hair loss that can appear anywhere on the scalp or body.

Key Characteristics

• Sudden onset with round or oval patches of hair loss
• Can affect the scalp, beard, eyebrows, or other areas
• Unpredictable progression that may remain limited or become more extensive
• Hair may regrow spontaneously in some cases
• Associated with other autoimmune conditions in some individuals

Types of Alopecia Areata

Alopecia Areata (patchy): Limited to one or more coin-sized patches

Alopecia Totalis: Complete loss of scalp hair

Alopecia Universalis: Loss of all body hair, including eyebrows and eyelashes

Because alopecia areata involves the immune system, seeking medical evaluation when you first notice symptoms is important for proper diagnosis and to rule out other conditions.

Telogen Effluvium (Stress-Related Hair Loss)

The telogen phase is the resting stage of the hair growth cycle when follicles are dormant. In telogen effluvium, a larger-than-normal number of hair follicles enter this resting phase simultaneously, leading to excessive shedding several months later.

Key Characteristics

• Diffuse thinning across the entire scalp (instead of specific patterns)
• Sudden onset, typically 2-3 months after a triggering event
• Temporary in most cases
• Does not cause complete baldness

Common Triggers

• Physical or emotional stress
• Illness or high fever
• Surgery or major medical events
• Considerable weight loss
• Hormonal changes
• Nutritional deficiencies (iron, zinc, protein)
• Certain medications

Telogen effluvium is generally temporary and often resolves once the underlying trigger is handled. However, chronic or recurring episodes warrant medical evaluation to identify and treat underlying causes.

Traction Alopecia (Mechanical Hair Loss)

Traction alopecia occurs when constant tension is placed on hair follicles, typically from tight hairstyles such as ponytails, braids, buns, or hair extensions. The repeated pulling gradually damages follicles, leading to hair loss, particularly along the hairline and temples.

Key Characteristics

• Gradual hair loss at areas of tension
• Often affects the frontal hairline and temples
• May cause scalp tenderness or discomfort
• Preventable and potentially reversible if caught early
• Can lead to permanent hair loss if prolonged

Warning Signs

• Scalp tenderness when hair is styled
• Small bumps on the scalp
• Redness or inflammation
• Receding hairline, particularly at the temples
• Broken hairs along the hairline

The key to managing traction alopecia is recognizing the signs early and modifying styling habits. Avoiding tight hairstyles and reducing tension on the hair can prevent further damage. If the condition has progressed considerably, consulting a healthcare provider or dermatologist is recommended.

Cicatricial Alopecia (Scarring Alopecia)

Cicatricial alopecia, also known as scarring alopecia, refers to a group of rare disorders that destroy hair follicles and replace them with scar tissue, resulting in permanent hair loss. Unlike other forms of alopecia, the hair loss in this condition is irreversible in affected areas.

Key Characteristics

• Permanent destruction of hair follicles
• Smooth, shiny patches of scarred skin
• Hair does not regrow in scarred areas
• Can be primary (follicle-targeted) or secondary (due to external factors)

Types

Primary Cicatricial Alopecia: The hair follicle itself is the target of inflammation or an autoimmune response. Examples include:

• Lichen planopilaris
• Frontal fibrosing alopecia
• Central centrifugal cicatricial alopecia
• Discoid lupus erythematosus

Secondary Cicatricial Alopecia: Scarring occurs due to external factors that damage the scalp, such as:

• Burns or trauma
• Severe infections
• Radiation therapy
• Tumors
• Prolonged traction alopecia

Symptoms

• Burning, itching, or pain in affected areas
• Redness and inflammation
• Scabbing or crusting
• Loss of follicle openings (smooth, shiny appearance)
• Progressive hair loss in patches

Because cicatricial alopecia causes permanent follicle destruction, early medical evaluation is important when symptoms first appear. A dermatologist or hair loss specialist can perform a scalp biopsy to confirm diagnosis and identify the specific type.

Hair Shaft Abnormalities

Structural defects in the hair shaft itself can cause fragile hair that breaks easily, leading to the appearance of hair loss. These abnormalities can be congenital (present from birth) or acquired through damage.

Common Hair Shaft Disorders

Trichorrhexis Nodosa: The most common hair shaft disorder, characterized by weak points along the hair shaft that cause breakage. Often results from chemical damage (bleach, relaxers) or physical trauma (heat styling, harsh brushing).

Loose Anagen Syndrome: A condition where hair shafts are not properly anchored in the follicle, causing them to fall out easily with minimal trauma. Most common in young children with blonde or light-colored hair.

Monilethrix: A rare inherited condition causing beaded or fragile hair that breaks easily.

Diagnosis and Evaluation

Hair shaft abnormalities require examination by a dermatologist or trichologist (hair specialist). Diagnosis typically involves:

• Visual examination with magnification
• Microscopic analysis of hair samples
• Evaluation of underlying conditions (thyroid disorders, nutritional deficiencies)

Treating underlying health issues and avoiding further damage to the hair shaft are important considerations. A healthcare provider can help identify contributing factors and provide guidance on hair care practices.

Hair Loss Treatment in 2026: What Has Changed

The hair loss treatment field has seen notable progress over the past few years, and 2026 marks a meaningful point in what is available and what is on the horizon.

New Approvals for Alopecia Areata

For autoimmune-related hair loss, three JAK inhibitors have received FDA approval for severe alopecia areata: baricitinib (Olumiant, 2022), ritlecitinib (Litfulo, 2023), and deuruxolitinib (Leqselvi, 2024). These are US FDA approvals; Health Canada regulatory status for each may differ. Taken together, these approvals represent some of the most noteworthy advances in alopecia areata treatment in recent decades, giving patients with extensive hair loss an approved option where few previously existed. A healthcare provider can confirm what is currently available in Canada.

Pipeline Treatments for Androgenetic Alopecia

For androgenetic alopecia, finasteride remains one of the current approved options in Canada, while several non-hormonal candidates are advancing through clinical trials. These include a topical androgen receptor inhibitor in Phase 3 trials, with regulatory submissions in the US and Europe potentially expected in the coming years; a topical designed to reactivate hair follicle stem cells, with Phase 3 studies planned; and an extended-release hair loss treatment also reported in Phase 3 trials.

None of these treatments are yet approved or widely available. Their progression points to an expanded range of options beyond current standards of care. A healthcare provider can help you understand what is currently available and which therapies may eventually be relevant to your situation.

When to Seek Medical Evaluation

While some hair loss is temporary and resolves on its own, certain signs warrant prompt medical attention:

• Sudden or rapid hair loss
• Patchy or unusual patterns of hair loss
• Scalp pain, burning, or itching
• Scaling, redness, or other skin changes on the scalp
• Hair loss accompanied by other symptoms (fatigue, weight changes, skin changes)
• Hair loss that affects your quality of life or emotional well-being

A healthcare provider can perform a thorough evaluation, including:

• Medical history review
• Physical examination of the scalp
• Laboratory tests (blood work, hormone levels, nutritional assessment)
• Scalp biopsy (if scarring or unusual patterns are present)

Frequently Asked Questions

What are the best practices for managing hair loss in men?

Managing hair loss works best when approached early and with proper medical guidance. Key steps include getting a proper diagnosis from a licensed healthcare provider to identify the type and cause, treating underlying health factors such as nutritional deficiencies or hormonal changes, avoiding hairstyles that place repeated tension on the hairline, being consistent with any treatment plan your provider recommends, and tracking changes over time through photos or follow-up appointments. The earlier you seek evaluation, the more options are typically available.

Can you get a hair loss prescription without an in-person visit?

Yes. Men's online health clinics in Canada connect you with licensed Canadian healthcare providers through secure, text-based health assessments that do not require video calls or in-person appointments. You fill out a confidential health questionnaire, and a licensed provider reviews your information to determine if a prescription is clinically appropriate for your situation. If approved, treatment is shipped directly to your home in discreet packaging. The same standards of care apply as in a traditional appointment, and no prescription is guaranteed. The provider makes an independent clinical decision based on your health profile.

Understanding Your Hair Loss Journey

Experiencing hair loss can be emotionally challenging and may impact self-esteem and confidence. It's important to remember that:

• Hair loss affects millions of people and you are not alone
• Many types of hair loss have identifiable causes
• Early evaluation can help determine the type and cause
• Understanding your specific condition is the first step
• Support is available through healthcare providers and support groups

Hair loss is a common medical condition with identifiable causes and a range of management options. Men's online health clinics in Canada connect you with licensed Canadian healthcare providers who can assess your individual situation and discuss your options through a private, text-based assessment.

Completing an online health questionnaire from home makes it straightforward to connect with a licensed provider, without waiting rooms or in-person visits. Free follow-up messaging is typically available to support ongoing care.

This content is for informational purposes only and does not constitute medical advice. Always consult a licensed healthcare professional.