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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.

Hair loss and aging are caused by the breakdown of a key protein in hair stem cells.

The skin is a complex barrier for drug penetration, but understanding its structure and interactions can improve drug delivery methods.

Lecithin organogels could be good for applying drugs to the skin because they are stable, safe, and can improve drug absorption.

Fungi-produced compounds can change plant root growth.

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

Skin cells produce and activate vitamin D, which regulates skin functions and supports hair growth.

The new "differential stripping" method effectively measures how much substance gets into hair follicles.

Blocking JAK-STAT signaling can lead to hair growth.

Nanoparticles improve drug delivery through the skin but more research is needed on their long-term effects and skin penetration challenges.

Eating disorders like anorexia and bulimia cause skin problems, and dermatologists can help detect these disorders early for better treatment outcomes.

New targets for making and using brain-synthesized steroids could lead to better treatments for brain disorders and alcoholism.

MicroRNA-214 is important for skin and hair growth because it affects the Wnt pathway.

Pure carbon nanotubes are safe for mice, but impure ones cause immune issues and hair loss.

A genetic change in the EDAR gene causes the unique hair traits found in East Asians.

Microneedling is a safe and effective treatment for various skin conditions, often preferred for its fewer side effects and shorter recovery time.

Female Pattern Hair Loss affects women's self-esteem and needs more research for better treatment.

The document concludes that rapid identification, isolation, and strict infection control are crucial to manage SARS outbreaks.

Clomipramine may significantly reduce hair-pulling in Trichotillomania, but more research is needed on treatments and early onset cases.

Skin problems in COVID-19 patients are rare and may be due to the body's complex immune response or blood clotting issues.

Hidradenitis suppurativa is caused by genetic factors, inflammation, bacteria, hormones, and lifestyle factors like obesity and smoking.

Acne treatment varies, with topical and systemic therapies effective, and more research needed on treatment order and long-term effects.

Stress hormone corticosterone blocks a growth factor to slow down hair stem cell activity and hair growth.

Environmental factors, hormones, nutrition, and stress all significantly affect skin health and aging.

LGR5 helps maintain corneal cell characteristics and prevents unwanted changes by controlling specific cell signaling pathways.

Lasers and light sources can effectively remove hair, work best on fair skin with dark hair, and usually need multiple treatments.

Insulin resistance may contribute to various skin diseases and treating it could improve skin health and prevent more serious conditions.

Women with PCOS have different levels of certain fats and proteins in their blood, which could help diagnose the condition.

People with diabetes or obesity should manage their conditions carefully as they have a higher risk of severe COVID-19.

Advanced nanocarrier and microneedle drug delivery methods are more effective, safer, and less invasive for treating skin diseases.