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Understanding genes and hormones is crucial for managing male puberty and sex development disorders.

Testosterone's role in women's sex drive is unclear and needs more research, as low levels don't always mean less sexual interest and high levels can cause side effects.

Patients and doctors often differ in assessing hair loss severity, so treatment should be personalized.

Skin aging is largely due to differences in stiffness and elasticity between skin layers, leading to wrinkles.

AMH levels can't reliably tell the difference between LOCAH and all types of PCOS in women with excessive hair growth.

Alopecia areata and vitiligo share immune system dysfunction but differ in specific immune responses and affected areas.

Topical corticosteroid treatment showed no significant difference from placebo in treating alopecia areata in children.

Androgens can both promote and prevent hair growth due to differences in gene expression in hair follicles.

Both androgenetic alopecia and alopecia areata negatively impact quality of life, with no significant difference between them.

Menopause often leads to lower sexual desire and discomfort during sex, but treatment should be personalized and only if it bothers the woman.

Pediatricians should advise sexually active teens on safe sex and STD prevention, and discuss contraceptive options and their side effects.

The study found that women with PCOS have more and larger ovarian follicles and differences in ovarian structure, but these features alone can't always diagnose PCOS.

Mice are useful for researching human hair loss and testing treatments, despite some differences between species.

The research found that certain characteristics like age, sex, race, marital status, and education level can influence whether alopecia patients stick to their hair loss treatment with topical minoxidil.

Pig skin is a good substitute for human skin to measure drug absorption, but differences in skin structure and enzymes across species must be considered.

Artificially inducing hair regrowth in mice can change the normal pattern and timing of hair growth, with minimal color differences between old and new fur.

Humans and pets share similar allergy mechanisms, and studying pet allergies can help treat both human and animal allergies.

Finasteride treats enlarged prostate and baldness, but may cause limited urinary improvement and sex-related side effects.

PRP growth factor concentrations vary, no significant hair growth difference found.

The study found average numbers for different types of hair follicles in the scalp and observed differences between men and women, suggesting reasons for more common hair shedding in women.

Environmental factors like temperature and nutrition affect hair growth, with humans showing seasonal hair growth differences.

Some men taking finasteride for hair loss may experience sexual problems like erectile dysfunction and decreased sex drive, which can persist even after stopping the medication.

Both treatments reduced excessive hair growth in PCOS, but there was no difference in weight, hair score, hormone levels, or insulin resistance.

Chinese and Japanese bloggers discuss different topics and have varying opinions, reflecting cultural differences.

Taking finasteride every other month can still help with hair loss but may be less effective over time compared to taking it daily.

Scalp hair grows at 0.37 mm/day, forearm hair at 0.18 mm/day, and thigh hair at 0.30 mm/day, with no significant differences found in people with certain hair conditions.

The gene SDR5A1 is found in scalp hair of both hirsute and normal individuals, but it does not explain differences in hair growth.

Low-level laser therapy can stimulate hair growth more effectively than fake devices, but patient satisfaction is similar for both. Results should be taken with caution due to small study sizes and differences between studies. More research is needed.

The study found that giant pandas have more melanin in black hair follicles than white, with gene expression differences that could affect hair color and skin health.

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.