China
Africa
Explore chapters and articles related to this topic
Adnexal Diseases
Published in Ayşe Serap Karadağ, Lawrence Charles Parish, Jordan V. Wang, Roxburgh's Common Skin Diseases, 2022
Hasan Aksoy, Jordan V. Wang, Ayşe Serap Karadağ
Clinical presentation: Acne lesions arise on the sebaceous gland–rich areas of the face, chest, shoulders, and back. The primary lesions include open and closed comedones, papules, pustules, and abscesses or cysts. Plugging of the follicles with sebum and keratin can form skin-colored lesions that can oxidize to create blackheads.
Patient assessment
Published in Michael Parker, Charlie James, Fundamentals for Cosmetic Practice, 2022
The diagnosis of acne vulgaris is usually clinical, with a physician identifying the presence of comedones. Comedones are something with which almost every one of us is au fait; however, they are more commonly referred to as “whiteheads” or “blackheads” when describing their macroscopic appearance. The underlying physiology of these two distinct types of comedone is essentially the same, with a micro-comedone obstructing the pilosebaceous unit. The key differentiator as to which type of comedone will form is dependent on the level at which a microcomedone obstructs the unit. Should a microcomedone form deep within the pilosebaceous unit, then oxygen will not be able to reach the underlying mixture of dead keratinocytes and sebum and they will remain white, thus forming a “whitehead”. Should the microcomedone be causing a more distal obstruction, however, then oxygen will reach the dead keratinocytes and oxidise melanin within them. This reaction causes the melanin to turn black and unsurprisingly forming “blackheads”.
Non-erythematous lesions
Published in Richard Ashton, Barbara Leppard, Differential Diagnosis in Dermatology, 2021
Richard Ashton, Barbara Leppard
Small blackheads on the nose in elderly patients are very common. They are due to the failure of shedding of vellus hairs in the hair follicles of the nose. If the patient complains about the problem and wants treatment, adapalene (Differin) cream or gel applied at night for 6–8 weeks will give a fairly dramatic improvement. It can be kept clear by using it twice a week.
Effects and safety of fire needle adjuvant chemical peels therapy in acne vulgaris: a systematic review and meta-analysis
Published in Journal of Dermatological Treatment, 2023
Jianfeng Zhang, Peng Lin, Chenqi Guo, Cong Ma, Yiting Liu, Yingdong Wang, Yu Zhang
Acne vulgaris (AV) refers to a chronic inflammatory skin disease of the pilosebaceous follicles including sebaceous glands and hair follicles, which usually affects the face, chest, back and neck (1). Clinically, it is characterized by open comedones (blackheads), closed comedones (whiteheads) and inflammatory lesions including nodules, pustules and papules (2). AV may influence 9.4% of the global population, typically, it is the eighth most prevalent disease world, whose prevalence is estimated to range from just over 20% to over 95% (3). In addition, AV is more frequent in males than in females, and its prevalence varies depending on country and ethnicity (4). AV can not only bring physical effects like permanent scarring and disfigurement, but also has long-lasting psychosocial impacts affecting the patient’s quality of life. The comorbidities of acne including depression, social isolation and suicidal ideation should not be ignored (5).
Nanotechnology-based formulations toward the improved topical delivery of anti-acne active ingredients
Published in Expert Opinion on Drug Delivery, 2021
Ana Cláudia Paiva-Santos, Filipa Mascarenhas-Melo, Sara Cabanas Coimbra, Kiran D. Pawar, Diana Peixoto, Raquel Chá-Chá, André RTS Araujo, Célia Cabral, Selmo Pinto, Francisco Veiga
Acne classification is commonly based on the type of associated lesion [10,11]. Comedonal acne appears regularly on the facial area and has a non-inflammatory nature that includes closed comedones (whiteheads) or open comedones (blackheads) [12]. Papular acne is localized predominantly on the facial and back areas, involving papules, with a soft scarring appearance [13]. Pustular acne is frequently localized on the face, neck, and chest areas, involving pustules, that are described as small bumps filled with pus or fluid [10]. Severe pustulocystic acne is described by the existence of nodules and cysts localized on the groin, buttocks, and axillary areas, which usually affect more profound skin [10,13].
The assessment of the effects of the combination of microdermabrasion and cavitation peeling in the therapy of seborrhoeic skin with visible symptoms of acne punctata
Published in Journal of Cosmetic and Laser Therapy, 2019
Anna Kołodziejczak, Angelika Wieczorek, Helena Rotsztejn
The results of questionnaire revealed that 78% participants (7/9) estimated that the improvement in skin condition after a series of treatments was in the range of 55–70%, while 22% of participants stated that it was in the range of 75–100%. Most of participants (Table 1) observed decreased seborrhea, reduced amount of blackheads and a lower tendency to develop inflammatory conditions (pimples) within the face. Moreover, general improvement of skin appearance, following the combination therapy, were demonstrated on the basis of photographic documentation (Figure 3).