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The document concludes that accurate diagnosis of male and female gonadal disorders is crucial for effective treatment and better patient outcomes.

Tretinoin gel is safe for sun exposure, but tacalcitol doesn't significantly improve non-segmental vitiligo.

The document provides a comprehensive index of medical and surgical topics, including hair removal, hair restoration, and various treatments for injuries and conditions.

Hair loss caused by longer latent hair cycle and sudden miniaturization, not gradual follicle size reduction.

High-frequency ultrasound can effectively visualize and assess hair loss.

Trichoscopy helps tell apart Frontal Fibrosing Alopecia and Lichen planopilaris by showing different hair and scalp features.

Prdm1 is necessary for early whisker development in mice but not for other hair, and its absence changes nerve and brain patterns related to whiskers.

Women with PCOS are more likely to have skin problems like excessive hair, acne, and hair loss.

Melatonin helps regulate sleep and may aid in treating various health issues.

Zinc is important for skin health, and supplements can help treat various skin and hair disorders, but more research is needed for conditions like psoriasis and vitiligo.

Regenerative cellular therapies show promise for treating non-scarring hair loss but need more research.

Stem cell treatments show promise for hair loss but need more research.

New factors in female hair loss include genetics, hormones, stress, and inflammation; future treatments should also focus on these areas and consider the patient's emotional well-being.

Wnt signaling is crucial for pigmented hair regeneration by controlling stem cell activation and differentiation.

Melanocyte stem cells in hair follicles are key for hair color and could help treat greying and pigment disorders.

Oxidative stress causes hair to gray by damaging and killing pigment cells.

Cathepsin L is essential for normal hair growth and development.

Hair graying happens because certain cells aren't maintained properly.

Melanocyte activity in hair follicles is linked to the hair growth cycle, being active in growth phases and inactive in rest phases.

The article concludes that while we understand a lot about how melanocytes age and how this can prevent cancer, there are still unanswered questions about certain pathways and genes involved.

The new assay can track and measure melanosome transfer between skin cells, confirming filopodia's role in this process.

SDF-1/CXCL12 and its receptor CXCR4 are crucial for melanocyte movement in mouse hair follicles.

CD34+ and CD34- melanocyte stem cells have different regenerative abilities.

UV light can help stimulate the growth of new pigment cells from hair follicles in people with vitiligo.

Melanocyte stem cells are crucial for skin pigmentation and have potential in disease modeling and regenerative medicine.

Radiation mainly affects keratinocyte stem cells, not melanocyte stem cells, causing hair to gray.

Gonadal hormones significantly affect the severity of alopecia areata in mice.

The environment around melanocyte stem cells is key for hair regeneration and color, with certain injuries affecting hair color and potential treatments for pigmentation disorders.

Different techniques for vitiligo treatment work similarly well, with some better for specific body areas.

Only skin melanocytes, not other types, can color hair in mice.