What Are the Most Common Types of Hair Loss? A Simple Explanation

A Quick Overview: Why Understanding Hair Loss Type Matters

Hair loss is often talked about as if it’s one single condition – but in reality, there are several different types of hair loss, each with its own cause, pattern, timeline and treatment approach.

This is why one product can work well for one person and do nothing for another.

Understanding which type of hair loss you’re experiencing is the first and most important step toward choosing the right treatment – and avoiding unnecessary worry.

Below, we break down the most common types of hair loss, explain what they look like, why they happen, and whether they’re temporary or long-term.

1. Male Pattern Hair Loss (Androgenetic Alopecia)

Male pattern hair loss is the most common cause of hair loss in men. It’s a genetically determined condition associated with sensitivity of hair follicles to androgens (particularly DHT).

What it looks like:

• Receding hairline at the temples

• Thinning at the crown

• Gradual progression over years

Key points:

• Chronic and progressive

• Follicles gradually shrink (miniaturisation)

• Without treatment, hair loss usually continues

This type of hair loss does not resolve on its own, but it can often be slowed or stabilised with the right treatment.

Read more: What Is Male Pattern Hair Loss? A Simple Explanation

2. Female Pattern Hair Loss (Androgenetic Alopecia)

Female pattern hair loss is the most common cause of thinning in women, particularly after the age of 40.

What it looks like:

• Diffuse thinning on the top of the scalp

• Widening part line

• Reduced hair density rather than bald patches

Key points:

• Often gradual and subtle at first

• Strong genetic and hormonal component

• Hairline usually remains intact

Female pattern hair loss may be influenced by hormonal changes, such as menopause or conditions like PCOS.

Read more: What Is Female Pattern Hair Loss? A Simple Explanation

3. Postpartum Hair Loss (Telogen Effluvium)

Postpartum hair loss is a temporary form of shedding that occurs after pregnancy.

What it looks like:

• Sudden increase in shedding

• Diffuse hair loss across the scalp

• Thinning around the hairline or temples

Why does it happen:

During pregnancy, high oestrogen levels keep hair in the growth phase. After birth, hormone levels drop, causing many hairs to enter the shedding phase at the same time.

Key points:

• Common (affects up to half of new mothers)

• Temporary

• Regrowth usually occurs within 6–12 months

Read more: What Is Postpartum Hair Loss? A Simple Explanation

4. Menopause-Related Hair Loss

Hair loss around menopause is extremely common and often overlaps with female pattern hair loss.

What it looks like:

• Gradual thinning at the crown

• Widening part

• Reduced overall volume

Why does it happen:

• Declining oestrogen and progesterone

• Relative increase in androgen influence

• Shortened hair growth phase

Key points:

• Often begins during perimenopause

• May continue into post-menopause

• Early treatment improves outcomes

Read more: What Is Menopause Hair Loss? A Simple Explanation

5. Weight-Loss-Related Hair Loss (Including Wegovy & Mounjaro)

Rapid weight loss – whether from dieting or weight loss medications such as Wegovy or Mounjaro – can trigger telogen effluvium, a temporary shedding condition.

What it looks like:

• Diffuse shedding

• Hair thinning across the whole scalp

• Reduced overall volume

Why does it happen:

• Rapid calorie reduction

• Nutrient shortfalls

• Physiological stress on the body

Key points:

• Temporary for most people

• Hair follicles are not permanently damaged

• Regrowth is expected once weight stabilises

Read more: Does Wegovy or Mounjaro Cause Hair Loss? A Simple Explanation

7. Stress-Related Hair Loss (Telogen Effluvium)

Telogen effluvium is a temporary shedding condition triggered by physical or emotional stress.

Common triggers:

• Illness or infection

• Surgery

• Rapid weight loss

• Major life stress

• Hormonal changes

What it looks like:

• Sudden increase in shedding

• Hair falling out evenly across the scalp

• No scarring or bald patches

Key points:

• Usually starts 2–3 months after the trigger

• Often resolves within 6–9 months

• Hair follicles remain healthy

7. Alopecia Areata

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

What it looks like:

• Sudden, patchy hair loss

• Smooth, round bald patches

• May affect scalp, eyebrows, beard or body hair

• Some people may lose all their hair from their face/scalp (alopecia totalis) or even from all their body (alopecia universalis)

Key points:

• Can be unpredictable

• May resolve spontaneously or require treatment

Read more: Alopecia Areata: Symptoms, Triggers & Treatment Options

8. Traction Alopecia

Traction alopecia is caused by repeated tension on the hair.

Common causes:

• Tight ponytails or buns

• Braids or extensions

• Head coverings worn too tightly

What it looks like:

• Thinning around the hairline or temples

• Breakage in areas under tension

Key points:

• Often preventable

• Early stages are reversible

• Long-term tension can cause permanent loss

9. Scarring Alopecias

Scarring alopecias involve inflammation that permanently damages hair follicles.

What it looks like:

• Hair loss with redness, itching, pain or scaling

• People may experience red itchy patches or even lumps

• At the end, smooth, shiny scalp patches in affected areas can be seen

Key points:

• Less common

• Requires urgent medical assessment

• Early treatment helps prevent further loss

How to Tell Which Type of Hair Loss You Have

Ask yourself:

• Is the hair loss sudden or gradual?

• Is it diffuse or patchy?

• Is there a clear trigger (pregnancy, stress, weight loss)?

• Is it getting worse over time?

• Is there a family history of thinning?

At Hair + Me our Pharmacist Prescribers can assess:

• Pattern of loss

• Timing and triggers

• Scalp health

• Medical history

This helps ensure the right diagnosis – and the right treatment.

Is Hair Loss Always Permanent?

No. In some cases, such as in telogen effluvium, hair loss can be temporary. 

In pattern hair loss, hair loss is chronic and progressive. 

Knowing which category you fall into makes a huge difference to expectations and management.

When Should You Seek Help?

It’s worth speaking to a clinician if:

• Shedding lasts longer than 3–6 months

• Thinning is progressive

• You notice a widening part or crown thinning

• Hair loss is distressing or affecting your confidence

• You want clarity and reassurance

Early assessment often leads to better outcomes.

Final Thoughts

Hair loss isn’t one condition – it’s a group of different processes that can look similar on the surface but have a completely different mechanism of development. 

Understanding what type of hair loss you’re experiencing removes confusion, reduces anxiety and helps you take the most effective next step.

Clear explanations lead to better decisions – and better results.

References

1. Mubki T, Rudnicka L, Olszewska M, Shapiro J. Evaluation and diagnosis of the hair loss patient: part I. History and clinical examination. J Am Acad Dermatol. 2014 Sep;71(3):415.e1-415.e15. 

2. Mubki T, Rudnicka L, Olszewska M, Shapiro J. Evaluation and diagnosis of the hair loss patient: part II. Trichoscopic and laboratory evaluations. J Am Acad Dermatol. 2014 Sep;71(3):431.e1-431.e11.

3. Alessandrini A, Bruni F, Piraccini BM, Starace M. Common causes of hair loss - clinical manifestations, trichoscopy and therapy. J Eur Acad Dermatol Venereol. 2021 Mar;35(3):629-640. 

4. Dakkak M, Forde KM, Lanney H. Hair Loss: Diagnosis and Treatment. Am Fam Physician. 2024 Sep;110(3):243-250.