Hair Loss

Understanding the different types of hair loss is crucial for effective treatment. Each type has unique characteristics, causes and treatment approaches.

Treatments

Hair loss: causes and treatment options

Hair loss is common and can affect both self-confidence and quality of life. Whether the hair loss is temporary or long-term, professional help is available.

At Akacia Medical, we perform a thorough assessment and recommend an individual plan with the right treatment at the right time. Read more about our treatments or explore common conditions that cause hair loss.

Illustration of hair loss and treatment planning

Hair structure and growth cycle

To understand hair loss and how treatments such as hair transplantation work biologically, it helps to know how a hair strand is built and how the follicle’s growth cycle works.

From medulla to cuticle

A hair strand consists mainly of the protein keratin. In cross-section it is often described as three layers:

  • Medulla: the innermost layer, often thin or absent in fine hair.
  • Cortex: the main part of the strand – pigment is found here and most of the hair’s strength.
  • Cuticle: the outermost scale layer that protects the strand and affects shine and friction.

The follicle drives growth

Hair grows from the follicle in the scalp. Blood supply and nutrients to the follicle affect how strong and thick the strand becomes – which is why a healthy scalp matters for both medical treatment and transplantation.

Hair structure and growth cycle – illustration

Three phases: anagen, catagen and telogen

Each follicle follows a cycle. Different strands are in different phases at the same time – which is why most people shed a certain number of hairs every day without it being disease.

Anagen (growth)

The hair grows actively. This phase often lasts several years and most follicles are in anagen.

Catagen (transition)

A short transition phase where growth stops and the follicle prepares for the resting phase.

Telogen (rest and shedding)

The hair remains but does not grow. After a while the strand sheds and a new anagen phase can begin.

On average, scalp hair grows about 1 cm per month, but speed varies with genetics, age and general health.

Shedding around 50–100 hairs per day can be normal and reflects the cycle. Clearly increased daily shedding should be investigated.

Telogen, “shock loss” and hair transplantation

After a hair transplant it is common for transplanted hairs to shed within a few weeks – so-called shock loss or a shedding phase. This is an expected reaction linked to the growth cycle: the follicle may enter telogen before new hair starts to grow. The follicle remains in the skin, and new growth usually appears after a few months.

Read more about timeline and aftercare for hair transplantation

To see what regrowth often looks like in practice, see interviews and month-by-month follow-ups among our patient stories and more on our YouTube channel.

Can hair grow back?

The short answer is: sometimes. If the hair follicles are still active, there is often a chance to improve growth. If the follicles have been inactive for a long time, regrowth can be harder without surgical treatment.

What determines whether hair can come back?

It mainly depends on:

  • the cause of the hair loss
  • how long the hair loss has been going on
  • how much activity remains in the hair follicles
  • whether you receive the right treatment at the right time

On the page about symptoms we describe common scenarios: temporary hair loss, hereditary hair loss and long-term thinning.

Medications and temporary hair loss

Antibiotics rarely cause hair loss on their own, but the infection being treated, your body’s stress response, or side effects that affect gut flora and nutrient uptake can push more hairs into the resting phase at the same time—leading to temporary, diffuse shedding.

Strong antibiotic treatment can temporarily shift gut flora and reduce uptake of B vitamins and biotin. The illness itself or fever can also stress the body and disrupt the hair growth cycle. That is why increased shedding after antibiotics often reflects several factors—not just the tablet.

What is telogen effluvium?

Telogen effluvium means an unusually large number of follicles enter the telogen (resting) phase at the same time and shed a few months later. It is common after infection, fever, medication or other physical stress and often feels like overall thinning—unlike patterned hereditary hair loss, which needs a different assessment.

Once the trigger has passed and the body recovers, follicles can return to a normal growth phase, but it may take several months before density feels like before.

Recovery and next steps

If shedding persists or is severe, it is important to get a medical evaluation of the cause. Depending on your situation, scalp support with PRP may be relevant together with nutrition advice and follow-up.

Hair loss and medication – illustration

Myths and lifestyle factors

Many people wonder how everyday products and habits affect the scalp. Here we summarise facts on a common topic: dry shampoo and how product residue can affect the hair follicles if it is not rinsed away properly.

Dry shampoo absorbs oil and gives a quick dry feel, but it does not replace a normal hair wash. If product is left on the scalp or used often without thorough cleansing, residue can build up around the follicles, which may irritate the scalp and eventually affect how comfortably hair grows.

It is rarely about a single product in small amounts, but rather repeated use without restoring the scalp’s balance. If you have irritation, itching or increased hair shedding, it is wise to get a medical assessment of the cause.

On the page about symptoms we describe common signs of hair loss. Worried about your scalp? You are welcome to book a consultation and we will review your situation.

Scalp and everyday products – facts about dry shampoo and hair loss

Practical tips for scalp health

  • Use dry shampoo sparingly and treat it as a temporary fix – not a substitute for shampoo.
  • Wash your hair thoroughly between uses so product residue is removed.
  • Avoid using dry shampoo several days in a row if your scalp feels irritated or congested.
  • If problems persist, seek care to rule out other causes of hair loss.

Common causes of hair loss

  • Androgen Alopecia (hereditary hair loss)
  • Hereditary hair loss
  • Thyroid problems and hormonal imbalance
  • Illness, malnutrition, trauma and long-term stress

Clear signs that you are losing hair

Temporarily increased amounts of hair in the shower, on the pillow or in the brush.

A visibly receding hairline, wider parting or thinner hair on the crown.

If you lose more than about 150 hairs per day for a longer period, the cause should be medically assessed.

Female hair loss

Female hair loss can be caused by hormonal imbalance, thyroid problems, nutrient deficiency, stress and autoimmune conditions such as alopecia areata.

Female hair loss and treatment

Diagnosing hair loss

To find the underlying cause, we carry out a structured assessment with medical history, clinical evaluation, microscopic analysis of hair follicles and, when needed, blood tests and hormonal evaluation.

The goal is to establish the right diagnosis early so you receive treatment that is medically justified and realistic for your situation.

Treatment for hair loss

In the early stages, medical treatment and PRP can stimulate hair growth and slow further hair loss.

In larger bald areas, hair transplantation is the method that provides the most lasting results.

We often combine several treatment methods for better long-term outcomes.

Sudden hair loss after physical or psychological stress

Telogen effluvium means that an abnormally large number of hair follicles enter the resting phase at the same time. Hair shedding is often noticed a few months after a stressful period.

Common triggers include infection, high fever, rapid weight loss, childbirth, nutritional deficiency, medication or hormonal changes.

If the hair loss continues for a long time or is severe, you should seek care to rule out underlying disease and get the right treatment. Read more about hair loss caused by stress.

Medication for hair loss

When indicated, medicines such as minoxidil and finasteride can be used to slow hair loss.

At our clinic, medical treatment is often combined with PRP to create better conditions for hair growth.

The most suitable treatment is decided after medical evaluation and a personal treatment plan.

Hereditary hair loss and DHT

Long-term exposure to DHT can cause hair follicles to gradually produce thinner, shorter and weaker hairs. At a later stage, some follicles may stop producing hair completely.

This is a common mechanism behind Androgen Alopecia in both men and women and must be assessed in relation to your clinical picture.

Shedding hair - what is normal?

It is common for hair to become thinner with age. But if you notice clear changes in the hairline, density or increased daily hair shedding, it is wise to investigate the cause early.

Early action often gives better treatment outcomes. We help both men and women of different ages with individually tailored treatment plans.

Scales used to assess hair loss

We use established scales to assess the extent of hair loss and plan suitable treatment, for example the Ludwig scale for women and Hamilton-Norwood for men.

The assessment helps us create a realistic and structured plan, including whether medical treatment is sufficient or whether transplantation should be considered.

  • Scale 1: No hair transplant is needed.
  • Scale 2: Usually no transplant, but with asymmetry 800-1,000 grafts may be considered.
  • Scale 3: Often around 1,800-2,000 grafts for frontal coverage.
  • Scale 5: For example 2,000 grafts in front + 1,500 in the crown (total about 3,500).
  • Scale 6-7: Often planned in two stages with initial frontal work and later crown work depending on donor status.
Scale for assessing hair loss

The Ludwig scale for female hair loss

The Ludwig scale is used to describe the degree of diffuse thinning in women and is an important tool when planning treatment.

The scale helps us assess whether the focus should be medical treatment, PRP or whether hair transplantation may be suitable in selected areas.

  • Grade I: Mild thinning, usually with the frontal hairline preserved.
  • Grade II: More pronounced thinning over the top of the head and a wider parting.
  • Grade III: Pronounced thinning over larger parts of the scalp.
The Ludwig scale for female hair loss

Article in Aftonbladet Woman

Hair loss and treatment results

The first time Sofie Jansson, 45, noticed that she was losing hair was in her early thirties. Over ten years, her hair gradually became thinner.

In the article, she describes her journey and how the right treatment can help restore both hair and confidence.

Read the article in Aftonbladet

Next step

If you notice that your hair is changing, it is important to act early. We help you understand the cause and choose the right treatment with a clear, safe plan.

Ask our specialists your question

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