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A teenager had both alopecia areata and vitiligo, which are rare to occur together.

Monotreme hair structure and protein distribution are similar to other mammals, but their inner root sheath cornifies differently, suggesting a unique evolution from reptile skin.

Hair loss patterns are linked to temperament and can help diagnose it.

Mesotherapy and PRP are increasingly used for hair loss treatment but lack extensive research on their effectiveness.

Aging reduces the ability of human hair follicle cells to form new cell colonies.

Eye exams are crucial for kids with 13q deletion syndrome, tamoxifen can cause vision loss, Propecia may lead to cataracts, Lipoid Proteinosis causes skin bumps, and OCT is useful for diagnosing macular diseases.

Multiple eye conditions were studied, highlighting the importance of various imaging methods for diagnosis, the vision side effects of drugs tamoxifen and Propecia, and the usefulness of optical coherence tomography for diagnosing and monitoring macular and retinal diseases.

Local inflammation worsens autoimmune skin conditions by increasing antibody buildup.

Long-term testosterone therapy can cause hormone suppression, affect prostate and heart health, and alter physical characteristics, but does not increase prostate cancer risk and needs more research for full risk assessment.

Aging can lead to poorer scalp and hair health, including less hair and more scalp diseases, which should be managed to help older people feel better.

The interdigital gland in crossbred sheep is similar to skin and has specialized structures for secretion.

Skin fungal infections are more common in older adults due to factors like obesity, poor circulation, reduced mobility, and weakened immune defenses from certain medications.

The herbal cleanser increased hair growth in rats without harming their skin.

Microneedles help improve drug delivery through the skin and are used in medicine and beauty treatments.

Testosterone conversion to 5α-DHT may not be essential for its effects on the skin.

Most vertebrates can regenerate skin, nails, and corneas, but only some can regenerate teeth and lenses.

Rat skin takes up and processes testosterone differently than other organs, with testosterone being more important for the skin than its metabolite 5α-DHT.

Damaging mitochondrial DNA in mice speeds up aging due to increased reactive oxygen species, not through the p53/p21 pathway.

The skin and mucous membranes can regenerate over the basement membrane after damage, using nearby surviving cells.

Taking too much biotin can mess up blood test results, which might lead to wrong diagnoses and treatments.

Genes affect cytokine production, which can influence chronic diseases, and certain interventions may help prevent related molecular damage.

A new mouse hair mutation, called hague, is semidominant and unstable, but the exact cause is unknown.

Older skin has higher cancer risk due to inflammation and stem cell issues.

Liposomes and niosomes can help drugs penetrate the skin better.

Bioprinting could greatly improve health outcomes but faces challenges like material choice and ensuring long-term survival of printed tissues.

Goat hair follicles have insulin-like growth factor-I receptors that might affect hair growth, but no melatonin receptors were found.

Some stem cells in the body rarely divide, which could help create better treatments for diseases and aging.

The document concludes that recent research has improved understanding of skin diseases and the balance between cell growth and differentiation in the epidermis.

Ethanol over 50% helps minoxidil absorb better into skin.

FoxN1 overexpression in young mice harms immune cell and skin development.