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Patterned hair loss is the most common cause of hair loss seen in both the sexes after puberty. Numerous classification systems have been proposed by various researchers for grading purposes. These systems vary from the simpler systems based on recession of the hairline to the more advanced multifactorial systems based on the morphological and dynamic parameters that affect the scalp and the hair itself. Most of these preexisting systems have certain limitations. Currently, the Hamilton-Norwood classification system for males and the Ludwig system for females are most commonly used to describe patterns of hair loss. In this article, we review the various classification systems for patterned hair loss in both the sexes. Relevant articles were identified through searches of MEDLINE and EMBASE. Search terms included but were not limited to androgenic alopecia classification, patterned hair loss classification, male pattern baldness classification, and female pattern hair loss classification. Further publications were identified from the reference lists of the reviewed articles.

Smoking and its role in Androgenetic Alopecia has long been debated. Smoking may lead to hair loss by vasoconstriction, by forming DNA adducts, free radical damage to hair follicle, by enhancing senescence and hormonal effects. We have reviewed the available literature on AGA and smoking. Data available show that there is a significant association between smoking and AGA. However, studies demonstrating the benefit of avoidance of smoking in improving hair loss are lacking. Furthermore, large controlled studies with histological documentation are still unavailable to affirm the findings.

Hair oils are used all over the world since time immemorial; however, their exact effect on the hair and scalp remains obscure. They are usually easily accessible and are inexpensive. A wide variety of oils have been used and newer ones are coming up every day. The primary function of most of the hair oils is to act like an emollient but the unique characteristics of various hair oils suggests its action just more than emollient action. This article focuses on the different types of hair oils and their possible beneficial effects on the hair. Dermatologists need to be aware of the effects of hair oils and their usage.

Surgical plume with vaporized tissue particles, pathogens, and toxic gases emanating during dermatosurgical procedures is an occupational hazard to the dermatosurgeon, and protective measures must be taken to prevent their inhalation. Smoke evacuators are devices that capture and filter the plume generated during electrosurgical procedures or laser procedures, thereby maintaining a safe environment for the surgical team and the patient. A smoke evacuation system should be appropriately selected depending on the need of the facility. The objective of this article is to outline the health hazards of the smoke by-product of electrosurgery and lasers and provide details about safety measures and smoke evacuation systems.

Introduction Cosmetic gynecology is an expanding field with a steep rise in awareness and demand for procedures to enhance the aesthetic appearance of female genitalia. Aim This article aims to provide an overview of aesthetic gynecology for a practicing dermatologist. Methods A study conducted in India showed a rising trend in the demand of aesthetic vaginal procedures from 3.9% in 2012 to 28.97% in 2015. Conclusion Several aesthetic modalities such as peels, platelet rich plasma, and energy‐based devices and surgical modalities have been in use, though serious evidence for efficacy of many of these procedures is lacking.

Human adipose tissue (AT) is a rich and easily harvestable source of stem cells and various growth factors (GFs). It has been widely used hitherto for facial rejuvenation and volumization. Increasing evidence shows that dermal adipocytes are intricately associated with hair follicles (HFs) and may be necessary to drive follicular stem cell activation. Early published data have shown encouraging preliminary results for the use of adipocytes and their stem cells as a treatment option for hair growth. The aim of this review study is to analyze published literature on the effect of fat on hair growth and to summarize the current evidence.

Knowledge of facial anatomy is indispensable for dermatologists and plastic surgeons practicing aesthetic medicine, especially for those using fillers, as injection of fillers may be associated with serious complications such as vascular occlusion and blindness. Angiosome and choke vessels play an important role in vascular incidents occurring after filler injections. The objective of this article was to outline the anatomy and pathophysiology of choke vessels, a concept which is not well known to dermatologists.

Vasculitis comprises a diverse group of disorders with varying clinical, histopathological, and immunofluorescence findings arising due to an array of underlying pathogenic mechanisms. These varying reactions are primarily a reflection of complex interplay of different cells, vessels, and stroma. There are several controversies and differences of opinions in the diagnostic criteria, classifications, and terminologies. This article deals with different concepts and controversies in the subject, and also attempts to provide an algorithmic approach for the histopathological diagnosis.

Context: Tumescent local anesthesia is a form of local anesthesia, which is a technique in which a dilute local anesthetic solution is injected into the subcutaneous tissue until it becomes firm and tense. Originally developed to facilitate liposuction, the use of tumescent anesthesia has expanded to other dermatological and plastic surgery procedures, as well as to other disciplines, including endocrine and vascular surgeries. For infiltration local anesthesia, the conventional dosage of lidocaine is up to 4.5 mg/kg, and that with adrenaline is up to 7 mg/kg; however, in liposuction using tumescent anesthesia, the recommended maximum dose of lidocaine with adrenaline is up to 55 mg/kg. There are several important pharmacological, pharmacokinetic, and pharmacodynamic factors that need to be considered in the administration of tumescent anesthesia leading to considerable interdisciplinary differences of opinion with respect to the maximum dose of local anesthetic permissible. Although several studies and publications have studied these issues in liposuction extensively, the role of tumescent anesthesia in other indications has not been reviewed adequately. Aims and Objectives: The aim of this study was to discuss the science behind tumescent anesthesia, its applications, and safety considerations in different dermatosurgical procedures other than liposuction. Materials and Methods: For this review, a systematic literature search in PubMed, Embase, Web of Science, Cochrane Library, Central, Emcare, Academic Search Premier, and ScienceDirect was conducted for safety studies on tumescent anesthesia. Conclusion: Tumescent anesthesia is generally very well accepted by patients and is relatively safe at the recommended doses. Nonetheless, one must be vigilant about the signs and symptoms of LAST, as they may not manifest until several hours after the procedure. Lipid emulsion therapy should be readily available and could prove life-saving in such situations.