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Stress, nutritional issues, and chronic diseases can cause hair loss, and nail changes may signal internal diseases; treatment focuses on the underlying cause.

The guide helps clinicians diagnose and manage hair loss, detailing examination techniques and treatments for different types of alopecia.

The document concludes that hair loss is complex, affects many people, has limited treatments, and requires more research on its causes and psychological impact.

Most types of hair loss can regrow naturally, but there are no effective cures for male pattern or age-related hair loss, and only limited options for females.

Hair loss in Androgenetic alopecia (AGA) is due to altered cell sensitivity to hormones, not increased hormone levels. Hair growth periods shorten over time, causing hair to become thinner and shorter. This is linked to miscommunication between cell pathways in hair follicles. There's also a change in gene expression related to blood vessels and cell growth in balding hair follicles. The exact molecular causes of AGA are still unclear.

Early hair loss in men and women may indicate a higher risk of heart disease and metabolic problems.

Women with female pattern hair loss may have a higher risk of metabolic syndrome.

Cosmeceuticals are important for managing skin issues during the COVID-19 pandemic.

Hair health is influenced by genetics, aging, and environmental factors, with proper care needed to maintain it.

Skin symptoms can indicate endocrine disorders and have various treatments.

Hair loss can cause emotional and social issues, and various treatments, including medication, surgery, and psychological support, are needed.

Up to 50% of women may experience significant hair loss by age 50, with various causes and treatments available.

Up to half of women by age 50 experience significant hair loss, with various types and treatments available.

Sonidegib and vismodegib are similarly effective for advanced basal cell carcinoma, but sonidegib might have a slightly better safety profile.

Men with hormonal imbalances similar to PCOS may have increased risk of metabolic and heart diseases.

A specific thyroid hormone resistance mutation may be linked to different types of hair loss.

A woman's hair loss improved with treatment after a COVID-19 infection.

Dutasteride injections can help hair growth in androgenic alopecia but need more research for long-term use.

Genes and hormones cause hair loss, with four genes contributing equally.

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

Different hair loss types need accurate diagnosis for proper treatment.

Different amounts of daylight affect cashmere growth in goats by changing the activity of certain genes and molecules.

Two teenage boys lost hair after taking a drug for growth, which was not a known side effect for kids.

Hair greying is seen as a sign of aging; temporary fixes like hair dye are used, but a balanced diet and hair care can help manage it.

A 45-year-old woman with autoimmune diseases experienced patchy hair loss due to alopecia areata, which has no cure but can be treated, with varying success.

Japanese researchers created new hair follicles from human cells that grew hair when put into mice, and other findings showed a link between eye disease severity and corneal thickness, gene mutations affecting hearing and touch, and the safety of the shingles vaccine for adults over 50.

Premature graying of hair may suggest health issues and currently lacks effective treatments.

Hair changes can indicate systemic diseases or medication effects.

Cow placenta lotion works like minoxidil 2% for female hair loss, with fewer side effects.

Genetic mutations cause various hair diseases, and whole genome sequencing may reveal more about these conditions.