Changes occurring within the skin

Hair Follicle

Related terms · Pore

A hair follicle is a pocket inside the skin where hair grows. It is connected to a sebaceous gland, so if the opening becomes blocked or inflamed, acne or folliculitis may occur.

Reviewed by Korean Medicine Doctor Choi Yeon-seung · Last updated 2026-08-25

Overview

Hair follicles: Please look at these three things first

  • A hair follicle is a pocket inside the skin where hair grows. SebumSince it is connected to a gland, if the opening is blocked or becomes inflamed, acne or folliculitis-related acne may appear.
  • poreThe term 'pore' is commonly used to refer to the opening visible on the skin surface, while 'hair follicle' includes the internal skin structure.
  • In hairy areas such as the chest, back, and scalp, whether itching and pustulesrecur. Please let us know.

Meaning and Distinction

What is a hair follicle?

It is a skin structure that includes the pathway through which hair and sebum exit the skin. A hair follicle is a pocket inside the skin where hair grows. sebaceous glandsSince it is connected to a gland, if the opening is blocked or becomes inflamed, acne or folliculitis-related acne may appear.

Easily confused terms
The term 'pore' is commonly used to refer to the opening visible on the skin surface, while 'hair follicle' includes the internal skin structure.
Why this is checked during medical evaluation
This is used to distinguish whether acne occurs uniformly along the hair follicles or if comedones and inflammation of various depths are mixed.
Information to prepare for your visit
Please let us know if itching and pustules recur in hairy areas such as the chest, back, and scalp.

More details

Connecting hair follicles to my symptoms

A hair follicle is not just a hole for hair

Sebaceous glands are connected to the hair follicle, providing a path for sebum and dead skin cells to exit. The process of this opening becoming blocked and inflamed leads to the start of acne.

If the same breakouts appear in every hair follicle, other rashes are also examined

Acne often involves a mix of comedones and inflammation at various depths. In contrast, folliculitis may present as similar-sized breakouts along the hair follicles and can be itchy, so we check both the distribution and the sensation.

Frequently Asked Questions

Common questions when looking into hair follicles

Is a diagnosis determined by the term 'hair follicle' alone?

The term 'pore' is commonly used to refer to the opening visible on the skin surface, while 'hair follicle' includes the internal skin structure.

What should I note down regarding hair follicles before my medical evaluation?

This is used to distinguish whether acne occurs uniformly along the hair follicles or if comedones and inflammation of various depths are mixed. Please let us know if itching and pustules recur in hairy areas such as the chest, back, and scalp.

Acne Glossary

Compare similar terms here

You can check simple definitions before proceeding to detailed explanations.

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Evidence and Update Information

The following materials were referenced to verify the basis and scope of the definitions and treatment descriptions.

  1. NCBI Bookshelf: Hair follicle anatomy
Summary and review information for this page

Reviewing Medical Staff

Choi Yeon-seung, Doctor of Korean MedicineChief Director · Editor of Korean Medicine Atlas · BRC Researcher

Page Summary

A hair follicle is a pocket inside the skin where hair grows. It is connected to a sebaceous gland, so if the opening becomes blocked or inflamed, acne or folliculitis may occur.

What this page covers

What is explained
What should be checked first regarding the meaning of the hair follicle?
What situations are covered
It is a skin structure that includes the pathway through which hair and sebum emerge from the skin.
What distinctions are made
Reason for checking during medical evaluation: It is examined to distinguish whether acne develops uniformly along the hair follicle or if comedones are mixed with inflammation at various depths.
How should this be understood
Since it is connected to the sebaceous glands, if the opening is blocked or inflammation occurs, acne or follicular acne may appear.

Key Points

  • Meaning of hair follicle: It is a skin structure that includes the pathway through which hair and sebum emerge from the skin.
  • Difference from similar terms: 'Pore' is commonly used to refer to the opening visible on the skin surface, whereas 'hair follicle' includes the internal skin structure.
  • Reason for checking during medical evaluation: It is examined to distinguish whether acne develops uniformly along the hair follicle or if comedones are mixed with inflammation at various depths.

References cited on this page

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Acne Glossary

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