Heat rash (Miliaria): Images, Causes, and Treatment - DermNet
2018年2月19日 · Miliaria rubra, the most common form of heat rash, results in red, 2–4 mm, non- follicular papules and papulovesicles. They are very itchy. Background erythema is often present. In children, miliaria involves the trunk and the skin folds of the neck, axilla or groin. In adults, miliaria often affects the upper trunk, scalp, neck and flexures ...
Heat urticaria - DermNet
2019年3月11日 · Heat urticaria is a rare type of physical or chronic inducible urticaria. It is also called contact heat urticaria and localised heat urticaria. Heat urticaria occurs following the direct contact of a warm stimulus to the skin. The onset of urticaria is typically rapid (within minutes) and the urticaria resolves within 1–2 hours.
Intertrigo (Rash in body folds): Causes, Images, and More - DermNet
Intertrigo is due to genetic and environmental factors. Flexural skin has a relatively high surface temperature. Moisture from insensible water loss and sweating cannot evaporate due to occlusion. Friction from the movement of adjacent skin results in chafing. Intertrigo occurs more easily in environments that are hot and humid.
Alcohol and the Skin - DermNet
Vitamin B2 (riboflavin) deficiency presents with angular cheilitis (cracked corners of the mouth), atrophic glossitis (inflamed tongue) and a rash on the face that resembles seborrhoeic dermatitis. Pellagra is a deficiency of niacin (vitamin B3) and presents with the three ‘d’s: diarrhoea; dementia and dermatitis on sun-exposed areas.
Exercise-induced vasculitis - DermNet
Exercise-induced vasculitis is a harmless form of cutaneous small vessel vasculitis. It is also called golfer's vasculitis. It is a neutrophilic inflammatory disorder involving the small or medium-sized blood vessels of the skin and subcutaneous tissue. When only the small capillary vessels are involved, it is also called exercise-induced ...
Grover Disease - Transient Acantholytic Dermatosis: DermNet
The cause of transient acantholytic dermatosis is unknown. Due to the frequent association with skin occlusion, heat, and sweating, one theory suggests Grover disease is due to sweat duct damage and occlusion. Drug-induced transient acantholytic dermatosis may be due to the drug or its metabolites being excreted in the sweat with toxic effects ...
Livedo reticularis - DermNet
Livedo reticularis refers to various conditions in which there is mottled discolouration of the skin. It is described as being reticular (net-like, lace-like), as cyanotic discolouration surrounds pale central skin. The terminology of livedo reticularis may …
Erythema ab igne - DermNet
Erythema ab igne (EAI) is a skin reaction caused by chronic exposure to infrared radiation in the form of heat. It was once a common condition seen in the elderly who stood or sat closely to open fires or electric space heaters. Although the introduction of central heating has reduced EAI of this type, it is still found in individuals exposed ...
Textile contact dermatitis
Textile contact dermatitis is typically characterized by delayed reactions such as redness, scaling and itchiness. The symptoms may appear within hours of contact with the material, or sometimes a reaction may not be seen until days later. The areas of the body most often affected are the crooks of the arm, backs of the knees, armpits, groin ...
Photosensitivity (sun allergy) - DermNet
Photosensitivity refers to various symptoms, diseases and conditions caused or aggravated by exposure to sunlight. A rash due to photosensitivity is a photodermatosis (plural photodermatoses). If the rash is eczematous, it is a photodermatitis. A chemical or drug that causes photosensitivity is a photosensitiser.