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Androgens and other hormones affect hair growth and skin conditions like acne.

The conclusion is that PCOS is caused by ovarian sensitivity to hormones and disrupted hormone control, possibly due to ovarian factors, and more research is needed.

The nucleus is key in controlling skin growth and repair by coordinating signals, gene regulators, and epigenetic changes.

We now understand more about what causes acne and this could lead to better, more personalized treatments.

Hair loss in men (androgenetic alopecia) is significantly linked to decreased scalp sensitivity, but not temperature sensitivity. More research is needed to confirm this. Comparing this hair loss to leprosy is unsupported and stigmatizing.

New genetic discoveries may lead to better treatments for alopecia areata.

μ-opiate receptors in skin cells may affect skin health and healing.

Merkel cells and Langerhans cells in hair follicles are closely connected and may interact.

Leptin, a hormone from fat cells, affects immune responses and can influence skin diseases and hair growth.

Increased scalp sweating in frontal fibrosing alopecia may be linked to local skin inflammation.

Caffeine may help reduce stress-induced hair loss.

Neurotoxins can affect neurotransmitter release and have potential in treating muscle, pain, and cancer conditions, but more research is needed on how they work.

Natural products may help treat skin inflammation from abnormal adrenal hormones.

Human scalp hair follicles can produce and respond to several hormones, affecting hair growth and pigmentation.

Dogs have varying numbers of touch-sensitive Merkel cells in different skin areas, with most in the oral mucosa and facial skin, unrelated to age, sex, breed, or color.

Exclamation mark hairs suggest early scalp disease, while white dots indicate it's chronic.

Roxithromycin, an antibiotic, can increase hair growth and might be used as a treatment for hair loss.

Hair follicles are complex, dynamic mini-organs that help us understand cell growth, death, migration, and differentiation, as well as tissue regeneration and tumor biology.

Testosterone is important for men's sexual function, may help some women's sexual desire, while other hormones and neurotransmitters also play complex roles in sexual behavior.

Stress increases a factor in mice that leads to hair loss, and blocking this factor may prevent it.

Prolactin affects hair growth cycles and can cause early hair follicle regression.

Understanding how hair follicle stem cells work can help find new ways to prevent hair loss and promote hair growth.

Substance P may worsen acne by increasing inflammation, but corticosteroids might help by reducing this effect.

Human hair follicle stem cells show signs of low oxygen levels, which may be important for hair growth and preventing baldness.

Acne is caused by multiple factors including oil production, bacteria, inflammation, and possibly diet and environment.

Alopecia areata causes varying hair loss patterns, affecting hair, nails, and possibly glands, with treatment outcomes depending on disease duration and extent.

Trichodynia is a painful scalp condition not directly linked to the amount or type of hair loss and may involve psychological factors, with treatments showing mixed results.

Animal models, especially mice, are essential for advancing hair loss research and treatment.

Higher CRBP1 levels are linked to more severe alopecia areata.

Alopecia areata does not affect areas with psoriasis plaques.