Scales on human skin are a visible sign of the outer skin layer, the stratum corneum, peeling or flaking away. This happens when the skin becomes dry and dead skin cells accumulate, resulting in patches that might resemble fish scales. This condition can be a symptom of various skin issues.
Causes of Scaly Skin
Several conditions can cause scaly skin, including:
- Atopic dermatitis (eczema): Characterized by red, scaly patches. [Reference: Image of atopic dermatitis showing scaly patches]
- Fungal infections (like ringworm): Causes inflamed, scaly areas. [Reference: Image of ringworm showing scaly areas]
- Psoriasis: An autoimmune disorder causing thick, scaly skin patches due to overproduction of skin cells. [Reference: Psoriasis description from Medical News Today]
- Seborrheic dermatitis: An inflammatory condition causing flaky, white to yellowish scales on oily skin areas. [Reference: Seborrheic dermatitis description from MedlinePlus]
- Dry skin: Simple dryness can lead to flaking and peeling. [Reference: Verywell Health article on scaling skin]
It's important to note that "scales" in zoology refer to the protective plates on animal skin, like those found on reptiles or fish. [Reference: Wikipedia definition of scale (zoology)] While human skin conditions might visually resemble these animal scales, the underlying mechanisms differ. Shark skin, for example, has placoid scales, which are quite different from human skin flakes. [Reference: South Carolina Aquarium article on shark skin]
The term "scales" when referring to human skin should be understood in the context of skin peeling or flaking. The severity and cause will vary depending on the underlying condition. If you experience significant scaling, it’s crucial to seek a doctor's advice for proper diagnosis and treatment. [Reference: Healthline article on scaling skin]
