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The document discusses male and female pattern hair loss, its diagnosis methods, FDA-approved treatments like finasteride and minoxidil, their side effects, and the role of lifestyle changes.

Activating Nrf2 in skin cells causes skin disease similar to chloracne in mice.

AIRE deficiency causes hair loss similar to alopecia areata in mice.

Male hair loss is mainly due to thinner hair, not less hair.

Children with marasmus have more resting hair follicles and thinner, less pigmented hair, showing long-term malnutrition.

Menopause causes skin and hair to become drier and thinner, but hormone therapy can improve these conditions.

Middle-aged women with chronic telogen effluvium experience increased hair shedding but usually don't get significantly thinner hair.

People with X-linked hypohidrotic ectodermal dysplasia have no sweat ducts and less, thinner hair.

Older thin hair is not just thinner but also has different shape, structure, and stiffness.

Neonate scalp hair is thinner, lacks a medulla, and has smaller follicles compared to adult hair.

Women's hair generally gets thinner and less dense starting in their mid-thirties, with hair loss becoming more common as they age due to both genetics and environment.

Increasing COX-2 in mouse skin causes bigger sebaceous glands and thinner hair, but stopping COX-2 can reverse hair thinning.

Women of child-bearing age with androgenic alopecia lose hair density, especially in certain areas, and their hair becomes thinner. They also lose more than twice as much hair as healthy women.

Long-term diabetes, smoking, and poor blood sugar control increase the risk of artery disease in diabetic retinopathy patients.

SV40 T antigen in hair follicles causes abnormal hair and health issues in mice.

The document concludes that different patterns of hair thickness and scalp changes can help diagnose types of non-scarring hair loss.

Adults can develop late-onset loose anagen syndrome, which may often be misdiagnosed.

Splitting one hair follicle into two can help regrow hair with a 50% to 70% success rate, useful when donor hair is limited.

The conclusion is that exogen is a unique hair cycle phase and the new sampling method specifically targets this stage, which may help in future hair loss research.

Growing hairs are easier to pull out than resting hairs due to different anchorage strengths.

Topical tretinoin may increase beard hair density.

The document concludes that successful hair restoration surgery should consider facial proportions and balance, and requires surgical skill, artistic judgment, and realistic goals for a natural look.

The document concludes that treatments like oral anti-androgens, minoxidil, and topical spironolactone can be effective for hair loss in men and women.

Smaller hair grafts in transplants offer better cosmetic results and more styling options, but challenges like thinning and limited coverage remain.

Some vaccines might rarely cause hair loss, more research is needed.

CK15 is not a reliable marker for stem cells in damaged hair follicles from patients with CCCA.

Melatonin receptors in hair follicles help regulate hair growth and could treat hair loss.

Targeting drugs to hair follicles can treat skin conditions, but reaching deep follicle areas is hard and needs more research.

Hair analysis can offer clues about a person, but individual differences limit making precise identifications.

Females have higher estrogen receptor levels in hair than males, and these levels decrease in white hair compared to black hair.