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Male hormones cause different growth in identical human hair follicles due to their unique epigenetic characteristics.

Ultraviolet rays damage hair, smoking may cause hair loss, and good nutrition is important for hair health, but genetics mainly decide hair thickness.

New chemotherapy drugs cause skin side effects, but treatments like minocycline and tetracycline can help reduce them.

Human hair has more unsaturated fats inside than on the surface, and certain lipids may help bind the outer and inner layers together.

Skin problems in older people can indicate hormonal diseases, nutritional deficiencies, or conditions like diabetes, menopause, and HIV.

The cause of alopecia areata is likely a mix of genetics, immune system issues, and environmental factors, with more research needed to understand it fully.

Keratoacanthoma comes from hair follicle cells.

Children with HIV often have skin problems that can indicate the severity of their immune system damage.

Most skin changes during pregnancy are harmless and moles don't significantly change, but many women experience pigmentation changes due to hormones and sun exposure.

The document explains various skin conditions in cats and how to diagnose and treat them.

Blocking 5α-reductase can harm memory and brain structure, and increase harmful brain changes in male mice used for Alzheimer's disease research.

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

Targeting immune tolerance issues in Alopecia Areata could restore hair growth and maintain remission.

Retinoids can prevent skin cancer in high-risk people but have side effects and require more research on dosing and effectiveness.

Skin changes can indicate hormonal imbalances and help diagnose endocrine disorders.

New protein changes may be involved in the immune attack on hair follicles in alopecia areata.

Hair microscopy is useful for diagnosing hair disorders, but clear definitions are needed for accurate genetic analysis.

A new non-invasive method can analyze skin mRNA to understand skin diseases better.

Wounds can regenerate hair in young mice, but this ability declines with age, offering insights for improving tissue regeneration in the elderly.

Hyaluronic acid filler injections are a favored non-surgical method to improve facial aging signs due to their convenience, effectiveness, and durability.

Lack of cystatin M/E causes thin hair and dry skin.

Diabetes can lead to blindness and skin problems, and managing blood sugar and blood pressure is crucial to prevent these complications.

Dermoscopy is useful for many health professionals, not just dermatologists, in improving skin condition diagnoses and reducing unnecessary biopsies.

Skin's epithelial stem cells are crucial for repair and maintenance, and understanding them could improve treatments for skin problems.

Scientists have found specific genes linked to different hair loss conditions, which could lead to new treatments.

A woman with anorexia nervosa improved after treatment for pellagra, reminding doctors to check for this deficiency in patients with eating disorders.

Mutations in Plcd1 and Plcd3 together cause severe hair loss in mice.

Some drugs can cause skin reactions, which may improve when the drug is stopped, and rapid diagnosis and stopping the drug is crucial.

The document concludes that periocular hair disorders have various causes and treatments, and proper evaluation by specialists is important for management and prognosis.

The document concludes that patients with skin of color need specialized dermatological care and education to manage unique skin conditions effectively.