- Dréno B, et al. Development and evaluation of a Global Acne Severity Scale (GEA Scale) suitable for France and Europe. J Eur Acad Dermatol Venereol 2011;25:43-8.

The GEA Scale is a global scale validated both on photographs and acne patients which can be used either in clinical research or by the dermatologist in his office.

Using an established method for achieving consensus, experts in acne vulgaris concluded that an ideal acne global grading scale would comprise the essential clinical components of primary acne lesions, their quantity, extent, and facial and extrafacial sites of involvement; with features of clinimetric properties, categorization, efficiency ...

Apr 1, 2010 · GEA, developed by Thiboutot et al., is a system that grades acne scars and can be used for both clinical and research purposes.

This diagnostic study presents a multidimensional acne grading system linking the most relevant visual features of acne to a severity score and validates the scale with correlation of treatment decisions by 6 clinicians evaluating images of patients with acne.

Adult female acne (AFA) is defined as one that affects women over the age of 25 and may persist continuously or intermittently from adolescence or manifest for the first time in this period.

We developed an artificial intelligence algorithm (AIA) for smartphones to determine the severity of facial acne using the GEA scale and to identify different types of acne lesion (comedonal, inflammatory) and postinflammatory hyperpigmentation (PIHP) or residual hyperpigmentation.

Dec 3, 2010 · The scale was then validated by seven expert dermatologists in the field of acne [the Global Evaluation Acne (GEA) group] first on 34 photographic cases of Caucasian acne patients and second by clinical examination of 22 acne patients.

Jun 4, 2023 · The most commonly Acne grading tools used today are: Investigatory’s global assessment (IGA) Global Acne Severity Scale (GEA) Comprehensive Acne Severity Scale (CASS) The grading systems takes into account the type of acne lesions: Non-inflammatory leisons (whitehead and blackheads) Inflammatory lesions (papules and …

Nov 13, 2020 · Proper evidence-based c lassification and grading of a disease such as acne are important in guiding medical practitioners to properly diagnose diseases and treat patients. This is a review of the present classification of acne in order to …