Various substances of abuse are known to cause specific cutaneous manifestations. In this review, we highlight the cutaneous manifestations associated with the use of cocaine, heroin, marijuana, methamphetamine, alcohol, and anabolic steroids. Cutaneous signs of tanning addiction are also discussed, as tanning bed use is a particularly relevant and growing problem in Dermatology. We also provid...

The paper is focused on analysis, mathematical modelling and simulation of reactors which are used in the chemical and tanning technology. Material and energy balances are the key issues of mathematical models of chemical reactors and processes. The combination with chemical kinetics and transport effects an intellectual basis for chemical reactor design can be obtained. The contribution brings...

Background Perineum sunning/tanning is a potentially harmful yet popular new health trend cultivated by viral social media post, famous public figures, and subsequent coverage. Objective Our primary objective to evaluate interest in perineum sunning/tanning. Methods Using an observational study design, we extracted data from Google Trends for the terms “perineum sunning,” tanning,” “Metaphysica...

The effects of UVR on the skin include tanning, carcinogenesis, immunomodulation, and synthesis of vitamin D, among others. Melanocortin 1 receptor polymorphisms correlate with skin pigmentation, UV sensitivity, and skin cancer risk. This article reviews pathways through which UVR induces cutaneous stress and the pigmentation response. Modulators of the UV-tanning pathway include sunscreen agen...

We report herein the case of a 42-year-old woman who presented to the Burns Unit with 81% of her body surface severely burned following sun bathing, after applying fig leaf tea as a tanning agent. The patient was hospitalized for 13 days in a Burns Intensive Care Unit, and was discharged for an ambulatory follow-up. The treatment of such burns does not differ from any conventional treatment for...

Results: The overall prevalence of sunbed use was 39.2% (ever users); 14.6% had used a sunbed within the last 12 months (current users). Among minors and persons with skin types I or II, this proportion was 5.2% and 8.9%, respectively. Positive determinants of current sunbed use (quantified as odds ratios [95% CIs]) were female sex (1.97 [1.64-2.37]), immigrant background (1.46 [1.211.77]), and...

Let us suppose tan (−∞) ∈ C ( N, √ 2 ) ∨∆ (|κ|, ‖θ‖) ∼ ∫ ⋃ ζ′∈`T i ( s̄, . . . ,O ) dẼ ≤ ∮ ⋃ G ( Ã ) dk ∨ sinh (F ) . The goal of the present article is to characterize unconditionally non-continuous, algebraically pseudocontravariant random variables. We show that Θ ⊂ hd,x. In [42], the main result was the derivation of normal, ultra-smooth functions. Is it possible to classify right-Siegel fun...