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Dermatophagia. Dermatophagia (from Ancient Greek δέρμα — lit. skin and φαγεία lit. eating) or dermatodaxia (from δήξις, lit. biting) [3] is a compulsion disorder of gnawing or biting one's own skin, most commonly at the fingers. This action can either be conscious or unconscious [4] and it is considered to be a type of pica.
Pathogenic bacteria. Neisseria gonorrhoeae (small red dots) in pus from a man with a urethral discharge ( Gram stain) Pathogenic bacteria are bacteria that can cause disease. [1] This article focuses on the bacteria that are pathogenic to humans. Most species of bacteria are harmless and are often beneficial but others can cause infectious ...
Skin flora is usually non-pathogenic, and either commensal (are not harmful to their host) or mutualistic (offer a benefit). The benefits bacteria can offer include preventing transient pathogenic organisms from colonizing the skin surface, either by competing for nutrients, secreting chemicals against them, or stimulating the skin's immune system.
What they look like: Mosquitoes leave itchy bumps on the skin that may swell and become red. These reactions typically appear within minutes after a bite, the Mayo Clinic says.In some people, the ...
In addition to the bite itself, you might develop some other symptoms in the next few hours and days. The early signs of a spider bite may include: A raised, itchy bump or rash. Pain at the site ...
Easy flushing, a stinging sensation, and small, pus-filled pimples are other common signs of the condition, which is often confused with acne breakouts. Other symptoms to note: With rosacea, skin ...
The pathophysiology of a spider bite is due to the effect of its venom. A spider envenomation occurs whenever a spider injects venom into the skin. Not all spider bites inject venom – a dry bite, and the amount of venom injected can vary based on the type of spider and the circumstances of the encounter. The mechanical injury from a spider ...
Biting your nails is no picnic for your teeth, either. "Constant biting can lead to poor dental occlusion," says Richard Scher, M.D., an expert in nail disorders, "so the biter's teeth shift out ...