Hypertrophic scar: causes, symptoms and care

Unlike other scars that may fade more smoothly, a hypertrophic scar often looks raised, red and can feel tight or itchy. It does not grow beyond the original wound edges, as a keloid scar can, but it may still cause discomfort and change the look of your skin. Understanding this type of scar helps you support healing and reduce symptoms.

What is a hypertrophic scar?

A hypertrophic scar is a type of raised scar that forms after the skin has healed from an injury, surgery or burn. It results from the body producing too much collagen during wound healing. Unlike a keloid scar, it does not extend beyond the boundary of the original wound.

These scars are often red or pink at first and may feel firm or tight. Over time, some hypertrophic scars flatten, but they can remain noticeable for months or years.

What causes hypertrophic scars?

Hypertrophic scars can develop when:

  • A wound takes longer than 2–3 weeks to heal
  • There is repeated tension or movement around the wound (for example, after surgery, such as a C-section)
  • The skin experiences infection or delayed closure
  • The wound is deep, such as after burns or trauma
  • Everyday skin injuries become irritated, such as with piercings that heal slowly

People with darker skin tones and younger individuals are often more prone to developing hypertrophic scars.

Symptoms and appearance

Hypertrophic scars often:

  • Look raised and firm
  • Appear red or darker than surrounding skin
  • Cause itching, burning, or pain
  • Feel tight, especially over joints

Because they can limit movement and cause discomfort, they are more than just a cosmetic concern.

hypertrophic scar on skin, raised red scar within wound edges

Hypertrophic scar versus keloid scar

It’s common to confuse hypertrophic and keloid scars. Both are raised scars, but there are key differences:

  • Hypertrophic scars remain within the wound edges and may fade over time.
  • Keloid scars grow beyond the original wound and usually do not shrink on their own.

You can read more about keloid scars here.

How long do hypertrophic scars take to heal?

Healing can take months to years. Many hypertrophic scars flatten and fade gradually within 12–24 months. However, symptoms such as itching, redness and stiffness can continue during this period. Supportive care is often needed to keep the scar hydrated and comfortable.

Treatment and care options

Medical and clinical treatments

Doctors may recommend treatments such as:

  • Silicone sheets or gels
  • Pressure therapy (for large burn scars)
  • Laser treatment or steroid injections for severe symptoms

These treatments are usually prescribed when scars cause pain, restrict movement, or remain thick for a long time.

Daily care and hydration

Daily care plays a major role in scar recovery. A hydrating cream can:

  • Help reduce itching and tightness
  • Improve flexibility
  • Support scar maturation

Applying a medical hydrating cream such as ALHYDRAN helps restore the skin barrier and keep the scar tissue supple.

Explore ALHYDRAN

Daily care also includes protecting your scar from sun exposure, as UV light can darken and thicken the scar tissue.

A medical scar cream like ALHYDRAN SPF30 offers both hydration and effective UV protection, helping to prevent further damage to vulnerable scar tissue.

Explore ALHYDRAN scar cream

ALHYDRAN reviews

On the advice of the plastic surgeon, I bought Alhydran SPF 30. I wasn’t familiar with this brand myself. What a fantastic cream, economical to use and it feels great on the skin. I also bought the scar cream. I use it twice a day and can see my scars improving. Alhydran, truly recommended! A very satisfied customer.

Anonimous (66)

I had a knee replacement five months ago, and since then I’ve been applying Alhydran to the scar three times a day. It’s healing beautifully and fading more with time. I can’t say what it would look like without the cream, but I’m very happy with the results.

Germaine

After a melanoma was removed and later an additional piece of skin through a re-excision, I was left with quite a bare spot on my head where the surgeon placed a skin graft taken from my upper leg. To take proper care of this area, I looked for a good product WITH SPF.

Alhydran SPF 30 is an excellent product. It cares well for the graft site and provides protection against the sun. (Because I sometimes forget to put on my cap, it gives me that extra protection.)

Anonimous

Frequently Asked Questions

A raised scar that develops after skin injury, caused by excess collagen. It stays within the wound edges.

It looks raised, red, or darker than surrounding skin, and often feels tight or itchy.

They form when a wound heals slowly, under tension, or after burns, surgery, or piercings.

Many scars flatten within 12–24 months, but supportive care is needed to relieve symptoms during this time.

Scars cannot be fully removed, but scar treatments like silicone therapy, laser or hydrating creams can reduce thickness and discomfort.

References

We believe it is important that our claims are backed by evidence. The information we share is based on scientific research, clinical studies, and specialist experience worldwide.

  • Hoeksema, H., & Monstrey, S. (2013). Scar management by means of occlusion and hydration: A comparative study of silicones versus a hydrating gel-cream. Burns, 39(7), 1437–1448. https://doi.org/10.1016/j.burns.2013.03.025
  • Klotz, T., Kurmis, R., Munn, Z., Heath, K., & Greenwood, J. E. (2017). Moisturisers in scar management following burn: A survey report. Burns, 43(5), 965–972. https://doi.org/10.1016/j.burns.2017.01.014
  • Ziegenthaler, H., et al. (2011). Scars after large surface thermal burns – Registration of Quality of Life and therapeutic influence of ALHYDRAN. Presented at the European Burn Association Congress, The Hague, Netherlands.
  • Monstrey, S., & Hoeksema, H. (2007). Two years experience with a new product for the hydration of burn scars. Presented at the European Burn Association Congress, Budapest, Hungary.
  • Ziegenthaler, H. (2010). Effect of scar treatment products on unpleasant physical manifestations in patients suffering from extensive burn scarring. Presented at the DAV Conference, Styria, Austria.
  • National Health Service (NHS). (n.d.). Keloid and hypertrophic scars. Retrieved from https://www.nhs.uk/conditions/keloid-scars/
  • British Association of Dermatologists (BAD). (n.d.). Patient information leaflet: Keloid and hypertrophic scars. Retrieved from https://www.bad.org.uk/
Scar Guide Request the free Scar Guide
Scar Guide

Free Scar Care Guide

Start caring for your scar with expert-backed guidance. Download your free guide and take the first step in scar care.

"*" indicates required fields

Consent for marketing emails
This field is for validation purposes and should be left unchanged.