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Reptilian scales, feathers, and hairs evolved from changes in skin cell interactions.

Pangolins have lost some skin-related genes, but kept others, leading to their unique scales and skin features.

Tying a knot can measure hair friction, useful for medical applications.

The document concludes that scalp disorders can be treated with hair washing, specific shampoos, medications, and sometimes surgery or hair transplants, but hereditary baldness is untreatable.

Early onset and pustules indicate severe hair follicle inflammation, and while antibiotics help, the condition often worsens after treatment stops.

Hydroxychloroquine effectively treated twenty-nail dystrophy in a patient with alopecia areata.

Red fox, golden jackal, and gray wolf hairs have similar features but differ in length, thickness, and inner structure.

Hyaluronic acid injections improve skin thickness and quality, protecting against aging in rats.

Enzyme injections can effectively treat epidermoid cysts without surgery.

Pangolins have lost some skin-related genes, but kept others, showing complex skin evolution.

Avoid chemical and physical damage to protect hair.

Bird foot scales develop differently and can repair but not fully regenerate due to the lack of specialized stem cell areas.

The research identified two types of keratinocytes in chicken scales: one for hard scales and another for soft skin, with similarities to human skin differentiation.

Scientists found 53 keratin genes in yaks that are important for hair growth and share similarities with those in other animals.

Yak belly hair has higher porosity and is less stiff than human hair, making it absorb dye better but less suitable as a direct substitute for hair dyeing.

Acne lesions start with changes in hair follicles and increase in inflammation, suggesting a cycle that could affect treatment strategies.

Dermoscopy is an effective tool for accurately detecting skin cancers.

Autologous platelet concentrates show promise in esthetic treatments but need more standardized research.

Fish scale-based organic hair oil and shampoo may improve hair health and prevent damage.

Using an enzyme and keratin treatment can significantly repair and strengthen damaged hair.

Juglone from walnut extracts may help repair damaged hair.

Hair in mammals likely evolved from glandular structures, not scales.

Hard skin features like scales, feathers, and hair evolved through specific protein changes in different animal groups.

Dermoscopy helps diagnose and monitor treatment for hair loss from scarring conditions like discoid lupus and lichen planopilaris.

Dermoscopic examination helps diagnose different types of hair loss conditions by showing specific patterns.

The harlequin ichthyosis mouse mutation causes thick skin and early death, resembling a human skin disorder.

A man with follicular psoriasis got better after treatment with skin cream and allergy pills.

A rare skin condition with dark, thick, warty patches and some hair loss was found in a newborn boy.

Pubic hair has a thicker, more protective outer layer than scalp hair, possibly due to evolution.

The man has a genetic skin condition called pachyonychia congenita.