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Articles
Articles are listed in the order they are posted. To explore specific health topics, visit the Conditions page.
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Causes of Rosacea
Rosacea develops when the skin’s normal vascular, immune, and inflammatory controls become overly reactive, leading to persistent redness, flushing, visible blood vessels, and in some cases papules, pustules, and thickening of the skin. In other words, the condition is not caused by a single defect but by a combination of biological processes that amplify one…
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Causes of Psoriasis
Psoriasis is caused by an abnormal immune-driven acceleration of skin cell production, usually arising in people with a genetic predisposition and then triggered or amplified by environmental and physiological stressors. It is not simply a skin surface problem; it develops from a misdirected immune response that changes how skin cells grow, mature, and are cleared…
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Causes of Seborrheic dermatitis
What causes seborrheic dermatitis? It develops when several biological processes converge: increased activity of skin yeast that normally live on the body, an abnormal inflammatory response to those organisms or their byproducts, and changes in the skin barrier and oil production that make affected areas more vulnerable. In other words, seborrheic dermatitis is not caused…
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Causes of Pityriasis rosea
What causes Pityriasis rosea? In most cases, it appears to be triggered by an abnormal immune response, often after exposure to a viral or viral-like stimulus, rather than by a single clearly defined cause. The condition develops through specific biological processes that lead to temporary inflammation in the skin, and current evidence suggests that reactivation…
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Causes of Pemphigus vulgaris
Pemphigus vulgaris is caused by an autoimmune process in which the immune system mistakenly attacks proteins that hold skin and mucosal cells together. Instead of being triggered by a single external agent, the condition develops when specific biological mechanisms fail and the body begins producing antibodies against desmoglein 3 and often desmoglein 1 , two…
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Causes of Pediculosis
What causes Pediculosis? Pediculosis is caused by infestation with lice, small parasitic insects that live on human skin and feed on blood or debris depending on the species. The condition develops when lice are transferred to a person, attach to hair or clothing, and then reproduce on the body. In practical biological terms, Pediculosis is…
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Causes of Molluscum contagiosum
What causes Molluscum contagiosum? The condition is caused by infection with the molluscum contagiosum virus, a member of the poxvirus family, which infects the outer layers of the skin and triggers the growth of small, firm lesions. It develops through a specific sequence of biological events: the virus enters the skin, infects keratinocytes in the…