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Acneiform lesions are encountered in different chapters in various dermatology and dermatopathology textbooks. The most common titles used for these disorders are diseases of the hair, diseases of cutaneous appendages, folliculitis, acne, and inflammatory lesions of dermis and epidermis. In this chapter, first of all we will discuss folliculitis, a...
Contexts in source publication
Context 1
... authors accept pilonidal sinus as a component of follicular occlusion triad. In pilonidal sinus disease, hair shafts are embedded in fibrosis they continue growing and elongating inside fibrosis (Figure 4). Histopathologically dense suppurative inflammation, fragmented hairs, abscess formation, and necrosis are seen one within the other. ...
Context 2
... inflammatory lesions the inflammatory cells attacking follicular epithelia or perifollicular inflammatory cells are composed of mixed type cells (polymorphonuclear leucocytes, lymphocytes, histiocytes). Foreign-body-type multinuclear giant cells and/or granulomatous reactions can be observed as a result of follicular rupture (Figure 14). ...
Citations
... Acne fulminans is an exceedingly uncommon and severe form of acne with systemic signs, whereas acne conglobata is characterised by linked nodules and abscesses. Athletes and those who wear restrictive clothing are particularly prone to acne mechanica [12][13][14], which is brought on by the skin's reaction to friction, pressure, or heat. Treatment of Acne Vulgaris Table(2) Different treatment options for acne vulgaris [15][16][17] : ...
... To provide an objective and more accurate bacterial assessment, efforts have been paid to develop strategies to facilitate the visualization and diagnosis. For example, tape stripping and gram staining were used in the evaluation of bacterial infections within facial skin [11][12][13] . However, the entire procedure for sampling and staining is time-consuming, making such method difficult to provide real-time aids. ...
We propose a smartphone-enabled system and method to realize multispectral autofluorescence imaging for analyzing bacterial infection within skin and oral cavity. The system consists of an unmodified and intact commercial smartphone and a home-made cell phone case with built-in black light LEDs. We use Wiener estimation method to calibrate the RGB-mode smartphone camera and transform the acquired autofluorescence photographs into pseudo-multispectral data cubes with 15 wavebands ranging from 420 nm to 700 nm. Then, we extract and compare the spectral performance of emissions from bacteria-produced porphyrins and endogenous background tissue. Based on the extracted autofluorescence spectra, we apply weighted subtraction between wavebands of interest to realize bacteria targeting and feature mapping. We conduct analysis of autofluorescence on facial skin and dental plaques to demonstrate the performance of the proposed system and methods. Further, with this strategy, we realize quantitative analysis of the bacterial infection in the combination and oily types of skin. Compared to traditional bacteria assessment strategies, we provide a method with the features of real-time visualization, label-free molecular identification, and feature mapping. Meanwhile, differing from the most conventional multispectral imaging systems, the proposed smartphone-based system works in a snapshot mode, thus improving its immunity to motion artifacts. Considering the popularity of smartphones in today's world, it is expected a relatively easy acceptance of the proposed cost-effective method by the community, making an impact on skin and oral care in general and in rural areas with low resource settings in particular.
