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TrichoScan is reliable for counting and measuring hair density but may not accurately assess hair types in women with hair loss.

A man with total hair loss developed blackhead-like spots on his scalp, possibly because no hair was present to help drain oils.

Lichen simplex chronicus on the scalp can be diagnosed by specific hair and skin signs and treated with corticosteroids and therapy.

Sonic hedgehog signaling is crucial for hair growth and maintaining hair follicle identity.

Women with androgenetic alopecia (hair loss) have normal prostate specific antigen levels but higher testosterone levels.

Skin and hair renewal is maintained by both fast and slow cycling stem cells, with hair regrowth primarily driven by specific stem cells in the hair follicle bulge. These cells can also help heal wounds and potentially treat hair loss.

The conclusion is that teeth, hair, and claws have similar stem cell niches, which are important for growth and repair, and more research is needed on their regulation and potential markers.

Steroids, particularly estrogens and 5α-reductase inhibitors, affect blood vessel-related hair growth processes in hair follicle cells.

AGA progression involves increased lipid synthesis, electron transport, and hair follicle miniaturization.

Immune cells help regulate hair growth, and better understanding this can improve hair loss treatments.

Oral minoxidil is a safe and effective treatment for patterned hair loss.

Notch signalling helps skin cells differentiate and prevents tumors.

Estrogens can improve skin aging but carry risks; more research is needed on safer treatments.

Stress stops hair growth in mice by causing early hair growth phase end and harmful inflammation through a specific nerve-related pathway.

A gene deletion causes the "hairless" trait in Iffa Credo rats.

Topical vitamin D is useful for some skin conditions but not effective for others, and more research is needed.

The Polish Society of Dermatology recommends treatments for alopecia areata that vary by severity, including topical and systemic medications, with long-term maintenance important for management.

Understanding proteins in skin structures like claws and hair is crucial for future research.

Clinicians should look for skin issues, sleep problems, cognitive changes, and food cravings as signs of insulin resistance.

Vitamin D might be involved in the development of alopecia areata and could help in its treatment.

Finasteride increases hair density in female androgenetic alopecia, but individual results may vary.

Male androgenetic alopecia involves hair follicle miniaturization due to DHT, with potential treatments using inhibitors and blockers.

Different types of stem cells and their environments are key to skin repair and maintenance.

The update highlights that non-classic congenital adrenal hyperplasia is common in women with excess male hormones, requires specific hormone tests for diagnosis, and has various treatment options depending on age and symptoms.

New treatments targeting skin stem cells show promise for skin repair, anti-aging, and cancer therapy.

Stress-related substance P may lead to hair loss and negatively affect hair growth.

Various hair camouflage options help people with hair loss improve appearance.

Some growth factors, while important for normal body functions, can cause diseases when not regulated properly.

Different types of stem cells exist within individual skin layers, and they can adapt to damage, transplantation, or tumor growth. These cells are regulated by their environment and genetic factors. Tumor growth is driven by expanding, genetically altered cells, not long-lived mutant stem cells. There's evidence of cancer stem cells in skin tumors. Other cells, bacteria, and genetic factors help maintain balance and contribute to disease progression. A method for growing mini organs from single cells has been developed.

Ancient hair can preserve hormones, revealing health and fertility insights.