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Articles
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Causes of Impetigo
Impetigo is caused by a bacterial infection of the outer layers of the skin, most often involving Staphylococcus aureus or Streptococcus pyogenes . It develops when these bacteria gain access to the skin surface, multiply, and produce toxins or enzymes that damage the superficial skin barrier. The condition is therefore not caused by a single…
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Causes of Hyperhidrosis
Hyperhidrosis is caused by overactivity in the body’s sweat-producing system, leading to sweating that is greater than what is needed for normal temperature control. In some people, the condition develops because the nerves that signal the sweat glands are unusually active; in others, it appears as a result of an underlying medical disorder, hormonal change,…
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Causes of Hidradenitis suppurativa
Hidradenitis suppurativa develops when hair follicles in certain areas of the body become blocked, damaged, and then drive a persistent inflammatory response. The condition is not caused by a single factor. Instead, it arises from a combination of follicular obstruction, immune system dysregulation, local inflammation, and influences such as genetics, hormones, body weight, smoking, and…
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Causes of Herpes zoster
Herpes zoster, commonly called shingles, is caused by the reactivation of the varicella-zoster virus, the same virus that causes chickenpox. After a person recovers from the initial infection, the virus does not leave the body completely. Instead, it remains dormant in nerve tissue for years or decades and can later become active again when conditions…
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Causes of Herpes simplex
What causes Herpes simplex? At its core, Herpes simplex is caused by infection with the herpes simplex virus, usually herpes simplex virus type 1 (HSV-1) or herpes simplex virus type 2 (HSV-2). The condition develops when the virus enters the body, infects cells at the skin or mucosal surface, and then establishes a lifelong presence…
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Causes of Hand, foot, and mouth disease
Hand, foot, and mouth disease is caused by infection with specific enteroviruses, most commonly coxsackievirus A16 and enterovirus 71, and sometimes other related viruses such as coxsackievirus A6. The condition develops when these viruses enter the body, replicate in the upper airway or digestive tract, spread through local tissues and the bloodstream, and trigger the…
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Causes of Furuncle
What causes furuncle? A furuncle, also called a boil, develops when a hair follicle becomes infected and the surrounding skin and deeper tissue fill with pus. The most common cause is bacterial infection, especially by Staphylococcus aureus , but the condition usually arises only after a combination of local skin breakdown, bacterial entry, and a…