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A thorough history and examination are crucial for diagnosing skin diseases, which affect up to a third of people. This includes details about skin lesions, medication, general health, lifestyle, family, and contacts, as well as examining the rash, hair, nails, and mucous membranes. Changes in hair and nails can also indicate other medical and skin disorders.

Hair follicle development is controlled by interactions between skin tissues and specific molecular signals.

Obesity affects skin health, causing conditions like acanthosis nigricans and may require different treatment approaches.

DNA profiling in forensics has improved, but predicting physical traits and ancestry from DNA has limitations and requires ethical consideration.

Microspheres about 1.5 micrometers in size can best penetrate hair follicles, potentially reaching important stem cells.

Adult stem cells from rat whisker follicles can regenerate hair follicles and sebaceous glands.

New nanofiber technology improves wound healing by supporting cell growth and delivering treatments directly to the wound.

The skin is a complex barrier for drug penetration, but understanding its structure and interactions can improve drug delivery methods.

Regenerated fully functional hair follicles using stem cells, with potential for hair regrowth therapy.

The conclusion is that accurate diagnosis of different types of hair loss requires good teamwork between skin doctors and lab experts.

Blocking JAK-STAT signaling can lead to hair growth.

Male and female skin differ due to hormones, affecting conditions like hair loss, acne, and skin cancer, and suggesting a need for gender-specific treatments.

Nanoparticles improve drug delivery through the skin but more research is needed on their long-term effects and skin penetration challenges.

Targeting the IL-23/IL-17 pathway effectively treats several inflammatory skin diseases.

Estrogen replacement can improve skin health in menopausal women but doesn't reverse sun damage or prevent hair loss.

Janus kinase inhibitors are promising treatments for autoimmune skin diseases like eczema and psoriasis.

Animals that change color with the seasons mainly do so in response to daylight changes, but climate change is causing camouflage problems that may require evolutionary changes.

Hair follicles are hormone-sensitive and involved in growth and other functions, with potential for new treatments, but more research is needed.

Hormones significantly affect hair and oil gland function in the skin, and more research is needed on skin-related hormone disorders.

No treatment fully prevents hair loss from chemotherapy yet.

Researchers identified genes linked to coat color, body size, cashmere production, and high altitude adaptation in goats.

Using human fat tissue derived stem cells in micrografts can safely and effectively increase hair density in people with hair loss.

Skin grafting can help repigment vitiligo, but it's less effective for widespread cases due to the Koebner phenomenon.

A certain smell receptor in hair follicles can affect hair growth when activated by a synthetic sandalwood scent.

Lichen Planopilaris and Frontal Fibrosing Alopecia may help us understand hair follicle stem cell disorders and suggest new treatments.

Stress hormone corticosterone blocks a growth factor to slow down hair stem cell activity and hair growth.

Human skin cells produce proenkephalin, which changes with environmental factors and skin diseases.

Niosomes are promising for skin drug delivery, offering benefits like improved drug penetration and stability.

Frequent hair coloring and styling can damage hair and cause breakage or loss.

Skin problems are very common in people with end-stage kidney disease.