Related Experiment Video
Updated: Jun 12, 2026

04:12
Roller Microneedle Combined with Tranexamic Acid Solution in Treating Melasma
Published on: January 19, 2024
[Therapy of acne scars]
Thomas Jansen1, Maurizio Podda
1Klinik und Poliklinik für Dermatologie, Venerologie und Allergologie der Universität Essen. thomas.jansen@medizin.uniessen.de
Summary
A new classification system for atrophic acne scars identifies three types: icepick, boxcar, and rolling. This system aids in selecting appropriate treatments to improve, but not eliminate, acne scarring.
Area of Science:
- Dermatology
- Medical Aesthetics
Background:
- Acne scarring is a prevalent and challenging dermatological condition.
- Existing classification systems lack universal acceptance, hindering standardized treatment approaches.
Purpose of the Study:
- To introduce a descriptive and universally acceptable classification system for atrophic acne scars.
- To facilitate the selection of targeted treatment regimens based on scar morphology.
Main Methods:
- Development of a classification system categorizing atrophic acne scars into three distinct types: icepick, boxcar, and rolling.
- Inclusion of associated features such as erythema and pigmentary changes.
Main Results:
- The proposed classification system identifies three primary atrophic acne scar morphologies: icepick, boxcar, and rolling.
- Associated conditions like erythema and pigmentary changes are noted as secondary findings.
Conclusions:
- A standardized classification of atrophic acne scars is crucial for effective treatment planning.
- While treatments can significantly improve acne scars, complete reversal is not typically achievable.
Related Concept Videos
Acne Infection
Acne is a multifactorial skin condition primarily affecting adolescents and young adults, with a global prevalence estimated to exceed 75% in this demographic. The condition is characterized by the formation of comedones (blackheads and whiteheads), papules, pustules, nodules, and, in severe cases, cysts, particularly in areas rich in sebaceous glands such as the face, neck, chest, and back. The pathogenesis involves increased sebum production, follicular hyperkeratinization, colonization by...
Clinical Applications of Epidermal Stem Cells
Epidermal stem cells (EpiSCs) are mainly located at the basal layer of the epidermis. These cells repair minor injuries of the skin and replace dead skin cells. However, EpiSCs’ cannot heal severe wounds such as major burns or those from diabetes or hereditary disorders. In such cases, culturing the epidermal stem cells from the patient is possible and has yielded successful treatment options, such as laboratory-grown skin grafts. These grafts are synthesized using a patient’s own EpiSCs...
Healing II: Complications
Complications during healing arise when tissue repair is altered by local or systemic factors. These changes involve abnormal collagen deposition, altered biomechanics, and reduced vascular supply, impairing restoration of normal structure and function.Loss of FunctionScar tissue differs significantly from the original tissue it replaces. In the skin, fibrosis lacks adnexal structures such as hair follicles, sebaceous glands, and sweat glands. Their absence reduces tactile sensitivity, impairs...
Skin Cancer
Skin cancer is a type of cancer that occurs when there is an abnormal growth of skin cells, usually triggered by damage to the DNA within the skin cells. It is primarily caused by exposure to ultraviolet (UV) radiation from the sun or artificial sources like tanning beds. Skin cancer is the most common type of cancer worldwide, and its incidence continues to rise.
Basal Cell Carcinoma (BCC): BCC is the most common type of skin cancer, accounting for about 80% of cases. It typically develops in...
Basal Cell Carcinoma (BCC): BCC is the most common type of skin cancer, accounting for about 80% of cases. It typically develops in...

