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Bird scales evolved from feathers, not reptile scales.

Different species and human skin models vary in their skin enzyme activities, with pig skin and some models closely matching human skin, useful for safety assessments and understanding the skin's protective roles.

A disease causing skin issues in young adult German short-haired pointers is hereditary, with most affected dogs not responding to treatment.

Some treatments like intralesional steroids and 5α-reductase inhibitors are effective for frontal fibrosing alopecia, but more research is needed.

Trichoscopy is a useful tool for diagnosing hair disorders without pulling out hair.

Severe COVID-19 may cause hair loss, and doctors recommend supplements and topical treatments to manage it.

The study found that a specific area of the hair follicle helps start hair growth by reducing the blocking effects on certain cells and controlling growth signals.

Boys with less severe EDA mutations in XLHED have milder symptoms and better sweat and hair production.

Some treatments work for common baldness, but there's less evidence for other hair loss types, and more research is needed.

Certain 4-azasteroids are effective at blocking the enzyme that processes testosterone in human skin and could help treat acne, excessive hair growth, and male pattern baldness.

Chemotherapy causes permanent hair follicle damage by triggering stem cell loss.

Black women's unique hair characteristics and styling practices can lead to specific scalp conditions, which require early diagnosis and appropriate treatment.

Loss of keratin K2 causes skin problems and inflammation.

Using finasteride or dutasteride does not increase the risk of male breast cancer.

People with Seasonal Affective Disorder have different brain activity in certain areas when resting.

Menopause affects hair and skin; more research needed for treatment.

Hedychium spicatum has medicinal properties but needs more research for scientific validation and use.

Progesterone and related compounds may help control seizures linked to the menstrual cycle but have limitations that need addressing.

IGF-1 may affect hair growth and loss, but more research is needed to confirm effective and safe treatments.

Gene therapy, especially using atoh1, shows promise for creating functional sensory hair cells in the inner ear, but dosing and side effects need to be managed for clinical application.

Smad4 is important for healthy hair follicles because it helps produce a protein needed for hair to stick together and grow.

The normal human prostate does not significantly affect blood DHT levels.

Most hair loss can be diagnosed with patient history and physical exam, and a few common types make up most cases.

Hormonal changes after childbirth and menopause can lead to women's hair loss and facial hair growth, with a need for better treatments.

Scientists identified three genes important for processing certain brain chemicals, thyroid hormones, and medications.

Finasteride affects prostate weights and pituitary activity differently with age.

Mathematical modeling can improve regenerative medicine by predicting biological processes and optimizing therapy development.

Successful hair transplant surgery depends on careful patient selection, proper surgical plan and technique, and attentive aftercare.

Researchers found a new gene, hacl-1, that is active in mouse hair follicles during hair growth and may be important for hair biology.

Hair restoration surgery can have complications; success depends on patient education, careful planning, and proper execution.