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Sensitive skin is often caused by nerve fibers and environmental factors, and can be managed with mild skincare and professional advice.

The skin protects the body and is constantly renewed by stem cells; disruptions can lead to cancer.

Skin development in mammals is controlled by key proteins and signals from underlying cells, involving stem cells for maintenance and repair.

Changes to the Foxp3 protein affect how well regulatory T cells can control the immune system, which could help treat immune diseases and cancer.

Animal models have helped understand hair loss from alopecia areata and find new treatments.

Choosing the right recall period for patient feedback is important for accurate data and depends on the disease, symptom changes, and patient impact.

The Lexington LaserComb helped regrow hair in mice with a condition similar to human hair loss.

Mice without the vitamin D receptor gene lose hair due to disrupted hair follicle cycles.

Correcting nutrient deficiencies may help with hair loss, but the benefits of supplements without a deficiency are uncertain and could be harmful.

Platelet-rich plasma may have some benefits in dermatology, but there's not enough evidence to widely recommend its use.

Excessive selenium from a supplement caused toxicity but patients recovered with care.

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

Fat tissue cells are a promising option for healing various diseases, but more research is needed to ensure they are safe and effective.

Women with PCOS often have skin problems like excessive hair, acne, hair loss, and dark patches, which can be treated with hormonal and non-hormonal therapies.

5α-reductase inhibitors can cause sexual problems, higher risk of aggressive prostate cancer, and depression.

The dermal regeneration template is effective in skin regeneration, reducing scarring, and has potential for future improvements.

Both vitiligo and alopecia areata involve an immune response triggered by stress and specific genes, with treatments targeting this pathway showing potential.

PCOS in teens is hard to diagnose, linked to genetics and lifestyle, and managed with weight loss and medication.

Pregnancy causes skin changes like darkening, hair thickening, nail changes, and increased risk of skin growths, most of which usually resolve after birth.

The document explains how the male reproductive system works, its role in making testosterone, and how conditions like obesity can disrupt it, leading to low testosterone and fertility issues.

Topical drugs and near-infrared light therapy show potential for treating alopecia.

Keratin proteins are crucial for healthy skin, but mutations can cause skin disorders with no effective treatments yet.

Low-dose finasteride may cause lasting sexual dysfunction and suicidal thoughts in young men.

Trichoscopy is a quick, noninvasive method to diagnose hair and scalp disorders, often reducing the need for biopsies.

Women with PCOS have fewer activated T cells in their ovarian follicles, which might affect fertility.

Some hair loss can be treated, especially in women due to nutrition, but some types remain untreatable.

Early onset and pustules indicate severe hair follicle inflammation, and while antibiotics help, the condition often worsens after treatment stops.

Abnormal Hedgehog signaling in blood cancers may help tumors grow and resist chemotherapy, suggesting potential for targeted treatments.

Laser/light treatments for hair loss are popular but lack scientific data proving effectiveness.

Hair greying is caused by oxidative stress damaging hair follicles and melanocytes.