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Acne

Professionally updated: March 9, 2026

Acne is a common skin condition that can cause pimples, redness, and irritation. For some people, acne can also lead to scarring and affect their daily lives. At Lægerne Danmark, our dermatologists offer thorough assessment and targeted treatment of acne in both young people and adults.

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Jakob Fraes
Specialist in General Medicine, Ph.D.
Read more about acne. Everything you need to know.

What is acne?

Acne is a common inflammatory skin condition that occurs when the sebaceous glands in the skin produce too much oil and the pores become clogged. This can lead to inflammation, pimples, blackheads, and in some cases, deeper nodules.

Acne can vary in severity and change over time, and the causes can include hormonal changes, heredity and genetic factors, stress, lifestyle, or influences from skin care and the environment. An early assessment by a dermatologist is important in order to choose the right treatment, alleviate symptoms, and reduce the risk of scarring.

How does acne develop?

Acne typically develops in several stages. First, sebum production in the skin's sebaceous glands increases, often as a result of hormonal changes. At the same time, dead skin cells can accumulate in the pores and form a plug that blocks the skin's excretory ducts.

When the pore is blocked, bacteria, especially Cutibacterium acnes, can multiply in the oily sebum. This can trigger an inflammatory reaction in the skin, causing the area to become red and tender and develop pimples, inflamed nodules, or cysts.

This process is an important part of explaining why acne occurs and why treatment often focuses on reducing sebum production, keeping pores open, and reducing inflammation in the skin.

Types of acne

Acne can manifest itself in different ways and vary in severity. Some people primarily experience mild skin changes, while others develop deeper and more inflamed breakouts.

Comedonal acne

This type is often referred to as mild acne and primarily manifests as blackheads and small pimples. Blackheads can be open (blackheads) or closed (whiteheads). Comedonal acne occurs when pores become clogged with sebum and dead skin cells, but without significant inflammation.

Inflammatory acne

Inflammatory acne causes red, sore, and inflamed pimples on the skin. Bacteria and an inflammatory reaction play a major role here, and the skin may feel irritated or swollen around the breakouts.

Nodular or cystic acne

This is a more severe form of acne, where deep, painful nodules or cysts form under the skin. These breakouts can be painful and are more likely to leave scars if not treated properly.

Hormonal acne

Hormonal acne is often seen in adult women and may be associated with hormonal fluctuations. The breakouts typically occur on the chin, jawline, or lower cheeks and may vary in line with the menstrual cycle or other hormonal changes.

Symptoms of acne

Acne can manifest itself in several ways, and symptoms vary from person to person. Common signs include pimples and blackheads, redness and irritation, as well as deep nodules or cysts, which can be painful. Many people also experience scarring after previous outbreaks, which can leave long-lasting marks on the skin.

Treatment options

There are several different types of treatment depending on the severity and type of acne. The aim of treatment is to reduce inflammation, prevent new outbreaks, and protect the skin from scarring.

The most common options include:

  • Local creams with antibiotics or retinoids: help reduce inflammation and promote skin renewal.
  • Tablet treatment: e.g., antibiotics or hormone therapy in more severe cases.
  • Skin care advice and guidance: support for proper skin care in everyday life to support treatment.
  • Light or laser treatment: may be relevant in some cases, e.g., for deeper cysts or scar tissue.

Follow-up and adjustment of the treatment plan ensure that the treatment is continuously adapted for the best possible effect.

How we help you with acne

Thorough assessment

  • Our dermatologists examine your skin
  • Assessing the type and severity of acne
  • Looking at previous treatments and factors that may affect the skin

Individual treatment

  • The treatment is tailored to you
  • May consist of medical creams, tablets, or other relevant treatment
  • The goal is to reduce inflammation, minimize outbreaks, and prevent scarring.

Advice and follow-up

  • Guidance on proper skin care and helpful advice for everyday life
  • Follow-up planned as needed
  • Ensures the best possible treatment results

Acne in teenagers and adults

Acne in teenagers
In teenagers, acne is typically caused by hormonal changes during puberty, when the production of sebum in the skin increases. This can lead to clogged pores and breakouts of pimples and blackheads. Teenage acne is often seen in the T-zone, i.e. on the forehead, nose, and chin, where the sebaceous glands are most active.

Acne in adults (adult acne)
Acne can also occur or continue into adulthood. Adult acne is more common in women and may be associated with hormonal fluctuations, for example in connection with the menstrual cycle, stress, or hormonal contraception. The breakouts are often located on the jawline, chin, and lower cheeks and may consist of deeper and more painful pimples.

How our dermatologists can help

At Lægerne Danmark, our dermatologists help you get an overview of your skin, find the cause of outbreaks, and plan a treatment that suits you. We follow you closely throughout the process and adjust the treatment so that you get the best possible results and can feel comfortable throughout the entire process.

Book now

Do you have acne, or are you finding that your current treatment isn't working? Book an appointment with our dermatologists, either in person or via video consultation, and get a thorough assessment and treatment so you can get better control of your skin.

Frequently Asked Questions

Can acne be treated as an adult?

Yes, acne can occur at any age, and treatment is also effective for adults. Our dermatologists tailor the treatment to your situation.

How long does it take to see results?

It depends on the type of treatment and the condition of your skin. Many people see improvement within 4–8 weeks, but some treatments take longer.

Can acne cause scarring?

Yes, especially deeper nodules or severe outbreaks can cause scarring. Early and proper treatment can reduce the risk.

Which treatment works best?

It depends on the type and severity of acne. Our dermatologists will assess your skin and select the most effective treatment for you.