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The guidelines advise against using testosterone and DHEA in women for most conditions due to safety and effectiveness concerns, but suggest considering testosterone for postmenopausal women with low sexual desire.

Dermatoscopy is useful for identifying different hair and scalp conditions and can reduce the need for biopsies.

Dermoscopy is a useful tool for identifying features of skin conditions, but more research is needed to define its role in dermatology.

The timing of when the gene Bmal1 is active affects aging and survival, with its absence during development, not adulthood, leading to premature aging.

Chitin and chitosan are useful in cosmetics for oral care, haircare, and skincare, including UV protection and strength improvement.

Stem cells are crucial for skin repair and new treatments for chronic wounds.

PCOS is caused by both genetics and environmental factors like diet and obesity.

Cyproterone acetate is effective for acne but less so for hirsutism and alopecia, with some side effects and quick menstrual cycle recovery after treatment.

Acne affects most teenagers and can continue into adulthood, with various treatments available that show improvement but have concerns like antibiotic resistance and side effects.

Hair loss in women is genetic, diagnosed by examination and biopsy, and treated with minoxidil, finasteride, or transplantation.

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

Testing basal 17-HP levels is a good way to screen for nonclassic adrenal hyperplasia in women with high androgen levels.

About 7% to 15% of Iranian women have polycystic ovary syndrome, depending on the criteria used to diagnose it.

Diagnosing PCOS in teenagers is challenging and should use strict criteria to avoid misdiagnosis and unnecessary worry.

Minoxidil and finasteride treat hair loss in men, while minoxidil treats hair loss in women.

Certain cells from hair follicles can create new hair and contribute to hair growth when implanted in mice.

Scientists have found a way to create hair follicles from skin cells of newborn mice, which can grow and cycle naturally when injected into adult mouse skin.

Overexpression of activin A in mice skin causes skin thickening, fibrosis, and improved wound healing.

Early diagnosis and treatment, using finasteride, minoxidil, or hair transplantation, improves hair loss outcomes.

Lifestyle changes can improve body composition, excess male hormone levels, and insulin resistance in women with PCOS.

High levels of male hormones, insulin resistance, and obesity are closely linked and worsen polycystic ovary syndrome, but more research is needed to improve treatments.

Visible light can damage skin and most sunscreens don't block it well; more research is needed on its effects and protection methods.

Most women with excess hair growth have an underlying hormonal issue, often treated with medication and hair removal methods.

Dermatologists need to understand hair products to treat hair and scalp issues better.

Hair and wool have complex microscopic structures with microfibrils and varying cystine content.

Women with PCOS are more likely to have impaired glucose tolerance and type 2 diabetes, especially if they are Asian or obese.

Opioid painkillers can cause many side effects, including breathing problems and addiction, but are generally considered safe when used properly.

Fluoxetine was not effective in treating hair-pulling disorder in the short term.

Trichoscopy is a useful tool for diagnosing different hair and scalp diseases by their unique visual features.

The conclusion is that accurate diagnosis of different types of hair loss requires good teamwork between skin doctors and lab experts.