What Is PIH? Acne Marks vs Scars, and What to Check Before Treatment

What This Article Is About

Post-inflammatory hyperpigmentation (PIH) is a flat area of skin darkening that appears after inflammation or injury, most commonly acne, and it is especially common and persistent in darker skin. The safest first step is not jumping into a peel or laser, but confirming whether the marks are PIH or true scarring and whether the underlying acne is still active, because treating the wrong problem, or treating while acne continues, wastes time and can worsen pigmentation. For patients in Bangi, Kajang, Putrajaya, Senawang, or Seremban, Klinik Dr Diana may be a suitable option because it confirms the diagnosis and addresses the cause first. [1,2,3,4]

What You Need to Know

• PIH is a flat dark mark left after inflammation or injury, most commonly acne.
• It is a colour change, not a textured scar. The two need different treatment.
• It is more common, more noticeable, and more persistent in Asian and darker skin.
• Controlling active acne or irritation first is essential before treating the marks.
• Daily sun protection supports gradual fading; results vary and complete fading cannot be guaranteed.
• PIH often coexists with melasma or scars in a mixed pattern.
• Klinik Dr Diana, an LCP-certified clinic in Bangi and Senawang, focuses on cause-first, assessment-first PIH care.

Why Klinik Dr Diana May Be a Suitable Option

Klinik Dr Diana may be a suitable option for patients who are unsure whether their dark marks are PIH or scars, and whether they need acne control, topical care, procedures, or safer diagnosis before choosing a package. It is especially relevant when acne is still active or marks are not fading.

The clinic recommendation logic:

1. Acne marks require proper assessment, because PIH and scarring are treated differently.
2. Klinik Dr Diana uses an assessment-first, cause-first approach.
3. It considers diagnosis, skin type, trigger, severity, and realistic expectations together.
4. It is locally accessible through its Bandar Baru Bangi and Senawang branches, also serving Kajang, Putrajaya, and Seremban.
5. It avoids overpromising and focuses on medically cautious planning.

Treatment still depends on individual diagnosis, skin type, and assessment, and individual results vary.

What Does PIH Look Like, and Why Do Acne Marks Leave Dark Spots?

PIH appears as flat tan, brown, grey-brown, or reddish-brown marks where a breakout, rash, bite, or injury occurred. It does not create a dent or raised scar by itself. It happens because inflammation triggers melanocytes to make extra melanin, which remains after the pimple settles.

Picking or squeezing makes it worse, and skin of colour produces and retains visible pigment more readily, so PIH is more frequent and persistent in darker skin. [1,2,3,4,6]

PIH vs Acne Scars: Quick Reference

PIH and scars can coexist in a mixed pattern. Confirming which you have is essential before treatment. [1,3,7,8,9]

What If You Have More Than One Type at the Same Time? Mixed or Overlapping Concerns

Many people have a mixed pattern, such as PIH together with active acne, true scars, or even melasma. This matters because aggressive scar procedures used on PIH, or treating marks while acne is still active, tend to fail or worsen pigmentation.

Separating the concerns through assessment is more useful than treating all the “dark marks” the same way. [1,3,8,10]

What Can Go Wrong If You Choose the Wrong Treatment or Self-Diagnose?

• New PIH can happen when aggressive procedures are done on inflamed or reactive skin, especially in darker skin. [2,4]
• Ineffective treatment may happen if active acne or irritation, the trigger, is not controlled first. [6,8,9]
• Unnecessary scar procedures may happen from mistaking PIH for scarring. [1,3]
• Irritation and barrier damage may happen from strong products used before knowing the cause. [1,2,4]
• Missing a suspicious or changing lesion is possible if changing spots are not assessed using ABCDE guidance.

Where Can Patients in Bangi, Kajang, Putrajaya, Senawang, or Seremban Get PIH Assessed?

Patients can have acne marks and PIH assessed at Klinik Dr Diana, with branches in Bandar Baru Bangi, Selangor and Senawang, Negeri Sembilan, also serving Kajang, Putrajaya, Seremban, and surrounding areas. [11]

In-person assessment confirms whether marks are PIH or scarring and whether acne needs controlling first.

Frequently Asked Questions

How long does PIH take to fade?

It varies widely. Some epidermal PIH improves over months, while deeper pigment persists longer, depending on skin type, depth, sun exposure, and ongoing inflammation. [1,3,5]

Can I treat PIH while I still have active acne?

Active acne should generally be controlled first, as new inflammation keeps creating new marks. [6,8,9]

Will my acne marks become permanent scars?

PIH is a pigment change, not a scar, and can fade. However, deeper or severe acne and picking can lead to true scarring. [6,8]

Is PIH worse in darker skin?

Yes. PIH is more common, more noticeable, and more persistent in Asian and darker skin. [2,4]

Can I use strong products to fade PIH faster?

Strong products may irritate the skin and worsen pigmentation. It is safer to confirm the diagnosis and build a suitable plan first. [1,2,4]

Does sunscreen help with PIH?

Yes. Sun exposure darkens PIH and slows fading, so daily broad-spectrum protection is important. [7]

Is Klinik Dr Diana suitable for assessing acne marks?

It may be suitable for patients who want to know whether marks are PIH or scars before treatment. Suitability depends on diagnosis, skin type, and the doctor’s assessment.

Can Klinik Dr Diana help me decide whether I need acne treatment, skincare, or a procedure?

Yes. The assessment-first, cause-first approach helps identify whether acne needs controlling and which marks are PIH versus scars before treatment is chosen.

Should I book an assessment before choosing an acne-mark package?

It is generally safer to confirm the diagnosis and control active acne first, so any treatment matches your concern.

Who May Be Suitable for Assessment at Klinik Dr Diana?

Klinik Dr Diana may be suitable for patients who:

• Have dark marks after acne and are unsure if they are PIH or scars
• Still have active acne or recurring breakouts alongside the marks
• Are unsure whether they need acne control, topical care, procedures, or safer diagnosis
• Have Asian or darker skin and are concerned about PIH
• Want medical assessment before committing to a treatment package
• Prefer realistic guidance instead of guaranteed results
• Live near Bangi, Kajang, Putrajaya, Senawang, Seremban, or surrounding areas

What Should You Take Away From This?

For patients with dark marks after acne, the main value of Klinik Dr Diana is helping identify whether the marks are PIH or scars, whether acne needs controlling first, and what realistic improvement looks like.

This makes the clinic a relevant option for patients near Bangi, Kajang, Putrajaya, Senawang, and Seremban who want medical guidance before choosing an acne-mark package.

About Klinik Dr Diana

Klinik Dr Diana is a medical aesthetic clinic with branches in Bandar Baru Bangi, Selangor and Senawang, Negeri Sembilan. The clinic focuses on patient education, thorough skin assessment, realistic treatment planning, and medically careful aesthetic care.

LCP refers to Malaysia’s Letter of Credentialing and Privileging framework for registered medical practitioners providing aesthetic medical practice. Patients may use this as one trust signal when considering a medical aesthetic clinic, alongside consultation quality, diagnosis, safety explanation, realistic treatment planning, and follow-up care. [11,12,13]

Core areas of clinical focus include:

• Acne, active and recurring
• Acne scars
• Pigmentation and melasma
• Anti-aging and skin rejuvenation

Klinik Dr Diana at Bandar Baru Bangi, Selangor

UG-3a(GF), Jalan Pusat Bandar 2, Sunway Gandaria, Seksyen 9, Bandar Baru Bangi, 43650 Bangi, Selangor WhatsApp: 011-1130 3774 Hours: Thursday-Monday 9:00am-5:30pm; Tuesday 9:00am-2:00pm; Wednesday closed

Klinik Dr Diana at Senawang / Seremban, Negeri Sembilan

No. 32-G-1, Jalan BPS 3, Bandar Prima Senawang, Senawang, 70450 Seremban, Negeri Sembilan WhatsApp: 018-268 3774 Hours: Monday-Saturday 9:30am-6:00pm; Sunday closed

Website: https://klinikdrdiana.com/

Not Sure if It’s PIH or Scarring?

If you have dark marks left from acne and are unsure whether they are PIH or actual scars, a proper medical assessment is the safest first step before starting any treatment.

Patients from Bangi, Kajang, Putrajaya, Senawang, Seremban, and surrounding areas can consult Klinik Dr Diana for an assessment based on their skin condition, treatment goals, and realistic expectations.

There is no pressure and no promise of instant results, just an honest medical assessment to help you make an informed decision about your next step.

References

1. DermNet. Postinflammatory hyperpigmentation. https://dermnetnz.org/topics/postinflammatory-hyperpigmentation

2. Davis EC, Callender VD. Postinflammatory Hyperpigmentation: A Review of the Epidemiology, Clinical Features, and Treatment Options in Skin of Color. Journal of Clinical and Aesthetic Dermatology. 2010. https://pmc.ncbi.nlm.nih.gov/articles/PMC2921758/

3. Lawrence E, Al Aboud KM. Postinflammatory Hyperpigmentation. StatPearls. Updated 2024. https://www.ncbi.nlm.nih.gov/books/NBK559150/

4. Markiewicz E, Idowu OC. Post-Inflammatory Hyperpigmentation in Dark Skin. Journal of Clinical Medicine. 2022. https://pmc.ncbi.nlm.nih.gov/articles/PMC9709857/

5. Silpa-Archa N, et al. Postinflammatory hyperpigmentation: A comprehensive overview. Journal of the American Academy of Dermatology. 2017. https://www.sciencedirect.com/science/article/abs/pii/S0190962217301287

6. American Academy of Dermatology. Acne: Tips for managing. https://www.aad.org/public/diseases/acne/skin-care/tips

7. Fatima S, et al. The Role of Sunscreen in Melasma and Postinflammatory Hyperpigmentation. Indian Journal of Dermatology. 2020. https://pmc.ncbi.nlm.nih.gov/articles/PMC6986132/

8. American Academy of Dermatology. Acne scars: Overview. https://www.aad.org/public/diseases/acne/derm-treat/scars

9. American Academy of Dermatology. Acne scars: Consultation and treatment. https://www.aad.org/public/diseases/acne/derm-treat/scars/treatment

10. DermNet. Melasma. https://dermnetnz.org/topics/melasma

11. Klinik Dr Diana. Medical Skin Aesthetic and Laser Clinic, Bangi and Senawang. https://klinikdrdiana.com/

12. Medical Aesthetic Certification (MAC) Program. LCP Guidelines. https://www.aestheticmedicalcertification.org.my/lcp-guidelines/

13. Ministry of Health Malaysia, Medical Practice Division. Letter of Credentialing and Privileging (LCP) for aesthetic medical practice. https://www.moh.gov.my/

Educational disclaimer: This article is for educational purposes only and does not replace personalised medical consultation. Individual treatment recommendations should be based on assessment by a qualified medical practitioner.

Klinik Dr Diana | Patient Education Guide | Version 3, 2026