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Covering a wound can stop hair growth by promoting scarring, but boosting a process called Wnt signaling can help hair grow back even when the wound is covered.

The document concludes that ERBB2 mutations are common in extramammary Paget disease and may respond to systemic treatments like cancer immunotherapy.

Chemical treatments and daily stresses damage hair, especially the cuticle layer.

UV rays can cause a type of hair loss known as telogen alopecia.

Hair loss affects women's mental health more than men's, causing anxiety, low self-esteem, and social insecurity.

Targeting vitamin D and androgen receptors may effectively treat triple-negative breast cancer, especially with chemotherapy.

Alopecia areata involves specific T-cells, unlike androgenetic alopecia.

Embryonic and adult stem cells are valuable for improving skin grafts and cell therapy.

The mtDNA N haplogroup is linked to a higher risk of late-onset lupus and specific symptoms in Han Chinese women.

Neurotrophin-4 increases calcium current in specific mouse neurons through the PI3K pathway.

A boy with toxic shock syndrome had severe heart rhythm problems but recovered with treatment.

The model explains how mammal ear hair cells respond to sound and adapt.

The prolactin gene polymorphism doesn't affect cashmere quality in these goats.

Low-level laser therapy may help regrow hair in dogs with non-inflammatory hair loss.

Metformin should be used for PCOS mainly in those with glucose intolerance, and has limited benefits for infertility or hirsutism.

The exact cause of increased 5α-reductase activity leading to hirsutism in women is still unknown.

The document explains how to identify different hair problems using a microscope.

Spironolactone works well for acne and hirsutism, isotretinoin is very effective for acne and may have antiandrogenic effects, and 5 alpha-reductase inhibitors should be considered antiandrogens.

No significant link between CAG repeat numbers and female pattern hair loss in Han Chinese population.

Both baricitinib and tofacitinib effectively reduce alopecia areata severity, with tofacitinib showing more improvement over longer use.

Researchers found new hair and nail genes, how hair reacts to UV, differences in white and pigmented hair growth, nerve changes in alopecia, treatments for baldness and alopecia, a toenail condition linked to a genetic disorder, and that nail fungus is more common in people with psoriasis.

The conclusion is that proper signaling is crucial for hair growth and development, and errors can lead to cancer or hair loss.

Shorter CAG repeats may cause hair and skin issues, while longer ones may link to acne.

The PDGF/PDGFR pathway is a potential drug target with mixed success in treating various diseases, including some cancers and fibrosis.

The human type II 5α-reductase gene, linked to certain male health conditions, has a specific structure and low similarity to other related genes.

Blocking the Wnt pathway could lead to new treatments for cancer and tissue repair but requires careful development to avoid side effects.

The guidelines ensure accurate genetic testing and reporting for 21-hydroxylase deficiency.

Dandruff is mainly caused by a scalp reaction to yeast, can worsen hair loss, and antifungal treatments may help.

The human type II 5α-reductase gene has a specific structure important for understanding certain medical conditions.

The document concludes that targeting the androgen receptor may be a promising breast cancer treatment, especially for certain types.