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Chemotherapy often causes hair loss, which usually grows back within 3 to 6 months, but there's no effective treatment to prevent it.

Amenorrhea is when a woman doesn't have periods, with primary amenorrhea starting by age 15 or within five years of breast development, and secondary amenorrhea when periods stop for three months. It affects 3-4% of women not pregnant, breastfeeding, or in menopause, mainly due to polycystic ovary syndrome, hypothalamic amenorrhea, hyperprolactinemia, and ovarian failure.

Some drugs can cause hair loss, and stopping these drugs often leads to hair regrowth.

New markers and pathways have been found in skin tumors, helping better understand and diagnose them.

Finasteride causes temporary cell death in BPH tissues.

UVB radiation changes the chemical makeup and dries out human hair but doesn't alter its appearance or texture.

Oxidative stress affects hair loss in men with androgenetic alopecia.

Methionine restriction works better than betaine for treating CBS deficiency symptoms in mice.

Finasteride may protect brain and improve behavior in rats with liver failure.

Activin helps skin growth and healing mainly through stromal cells and affects keratinocytes based on its amount.

New treatments for male hypogonadism are effective and should be personalized.

Infrared and Raman imaging can non-destructively analyze hair structure and help diagnose hair conditions.

The research identified genes and pathways important for sheep wool growth and shedding.

Hair in mammals likely evolved from glandular structures, not scales.

Vitamin D and calcium are important for quick and effective skin wound healing.

Certain sex hormones and antiandrogens can either slow down or speed up the growth of human hair follicle cells depending on their concentration.

Men with liver cancer have higher levels of a specific testosterone byproduct in their liver and blood, despite overall lower male hormone levels.

A woman with both TLE and SLE improved with hydroxychloroquine treatment.

Old drugs like finasteride and spironolactone are being successfully used for hair loss and skin conditions, and many other drugs show promise for new uses in dermatology.

Many drugs, not just chemotherapy, can cause reversible hair loss.

Blue light can help hair grow by affecting certain receptors in hair follicles.

Eating a lot of fat increases PKCβ and inflammation in skin fat cells, which affects skin and hair health.

A peptide known for reducing wrinkles also effectively inhibits an enzyme linked to skin inflammation and acne.

Eating less sugar, milk, and saturated fats and more vegetables and fish may help treat and prevent acne.

The conclusion is that Treg-targeted therapies have potential, but more knowledge of Treg biology is needed for effective treatments, including for cancer.

The p75 neurotrophin receptor is important for hair follicle regression by controlling cell death.

Hair growth is influenced by interactions between skin layers, growth factors, and hormones, but the exact mechanisms are not fully understood.

Androgens play a complex role in skin conditions like acne and hair loss in women, and normal blood levels don't always show true androgen status.

Tumor suppressors help control inflammation in cancer and restoring their function could lead to new treatments.

Disrupting Smad4 in mouse skin causes early hair follicle stem cell activity that leads to their eventual depletion.