Hair Loss Types Explained by a Dermatologist: Understanding the Causes of Hair Thinning

Hair loss can be frustrating, confusing, and sometimes even overwhelming. Whether you’ve noticed extra hair in your brush, a widening part, thinning around your crown, or changes along your hairline, one question usually comes to mind:

Why is this happening?

The answer isn’t always simple. Hair loss isn’t a single condition; it has many different causes, and each type requires a different approach. While some forms of hair loss are temporary and reversible, others require early diagnosis and treatment to prevent permanent damage.

That’s why understanding the type of hair loss you’re experiencing is one of the most important steps toward protecting your hair and scalp health.

In a new educational YouTube video, Board-Certified Dermatologist Dr. Sharleen St. Surin-Lord, founder of **DermHairDoc**, explains the most common types of hair loss, their causes, and why an accurate diagnosis matters.

Why Understanding Hair Loss Is So Important

Many people assume hair loss is simply a natural part of aging. Others blame stress, poor nutrition, or genetics without knowing the real cause.

The truth is that hair thinning can result from several different conditions, and while the symptoms may look similar, the underlying causes are often very different.

For example:

• Temporary shedding caused by stress requires a different approach than genetic hair loss.
• Hair loss caused by tight hairstyles differs from hair loss due to autoimmune conditions.
• Scarring forms of alopecia require early medical attention because permanent hair loss can occur if treatment is delayed.

This is why self-diagnosing can sometimes lead to unnecessary worry or delayed treatment.

Common Types of Hair Loss Explained

In the video, Dr. Sharleen discusses several of the most common hair loss conditions seen in dermatology clinics.

Androgenetic Alopecia

Often called male or female pattern hair loss, androgenetic alopecia is one of the most common causes of gradual hair thinning.

Women often notice:

• A widening part
• Diffuse thinning across the top of the scalp
• Reduced hair volume

Men commonly experience:

• A receding hairline
• Thinning at the crown
• Progressive baldness

Genetics play a significant role, but early treatment may help slow progression.

Telogen Effluvium

Have you experienced sudden shedding after:

• Major stress
• Illness
• Surgery
• Pregnancy
• Significant weight loss
• Emotional trauma

You may be experiencing telogen effluvium.

This condition causes more hair than usual to enter the shedding phase of the hair cycle.

The good news is that telogen effluvium is often temporary once the underlying trigger is addressed.

Alopecia Areata

Alopecia areata is an autoimmune condition in which the immune system mistakenly attacks hair follicles.

It often appears as:

• Smooth, round bald patches
• Sudden hair loss
• Hair loss on the scalp, beard, or eyebrows

Because it involves the immune system, treatment differs significantly from other forms of hair loss.

Traction Alopecia

Protective hairstyles can be beautiful and practical, but hairstyles that consistently pull on the hair can place excessive tension on the follicles.

Over time, this may lead to traction alopecia.

Common causes include:

• Tight braids
• Tight ponytails
• Sew-ins
• Heavy extensions
• Tight loc styles

Recognizing early signs allows you to modify styling habits before permanent damage develops.

CCCA (Central Centrifugal Cicatricial Alopecia)

CCCA is one of the most common forms of scarring alopecia, particularly among Black women.

Early symptoms may include:

• Tenderness
• Burning
• Itching
• Hair breakage at the crown
• Progressive thinning

Unlike temporary shedding, CCCA damages the hair follicles themselves.

Early diagnosis is extremely important because permanent hair loss can occur if left untreated.

Frontal Fibrosing Alopecia (FFA)

Frontal Fibrosing Alopecia typically affects the front hairline and temples.

Many people notice:

• A gradually receding hairline
• Eyebrow thinning
• Smooth skin where hair once grew

Because FFA is also a scarring alopecia, prompt evaluation by a dermatologist is important.

Scarring vs. Non-Scarring Hair Loss

One of the most valuable parts of Dr. Sharleen’s video is understanding the difference between scarring and non-scarring hair loss.

Non-scarring hair loss

Hair follicles remain intact.

Examples include:

• Telogen effluvium
• Androgenetic alopecia
• Alopecia areata

With appropriate treatment, hair may regrow or improve.

Scarring hair loss

Hair follicles become permanently damaged.

Examples include:

• CCCA
• Frontal Fibrosing Alopecia

This is why early diagnosis is essential.

Why Scalp Health Matters

Healthy hair begins with a healthy scalp.

The scalp is living skin, and when inflammation, irritation, or underlying conditions affect it, hair growth may also be impacted.

Maintaining good scalp health includes:

• Keeping the scalp clean
• Managing inflammation
• Addressing dandruff or irritation
• Seeking medical advice when unusual hair loss occurs

Ignoring scalp symptoms can sometimes allow underlying conditions to worsen over time.

Treatment Options

Hair loss treatment depends entirely on the underlying diagnosis.

Some individuals may benefit from:

• Lifestyle changes
• Prescription medications
• Topical treatments
• PRP (Platelet-Rich Plasma) therapy
• Improved scalp care
• Changes in hairstyling practices

There is no single solution that works for every type of hair loss, which is why an accurate diagnosis is so important.

[embed]

When Should You See a Dermatologist?

If you notice any of the following, it’s worth scheduling an evaluation:

• Excessive daily shedding
• Hair thinning that continues to worsen
• Bald patches
• Persistent scalp itching or burning
• Hairline changes
• Breakage concentrated in one area.
• A widening part

Early evaluation can make a significant difference, especially for conditions that may cause permanent hair loss if left untreated.

Learn More From a Board-Certified Dermatologist

Understanding your hair loss is the first step toward making informed decisions about your hair and scalp health.

In this educational video, Dr. Sharleen St. Surin-Lord explains the different types of hair loss, early warning signs, available treatment options, and why recognizing the cause is essential before beginning treatment.

Whether you’re experiencing increased shedding, thinning at the crown, or simply want to learn more about scalp health, this video offers valuable insights from a dermatologist who has spent decades treating hair and scalp disorders.