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Alopecia areata is an autoimmune condition causing hair loss due to the immune system attacking hair follicles, often influenced by genetics and stress.

New effective scar treatments are urgently needed due to the current options' limited success.

Alopecia areata involves immune activation in the scalp, suggesting treatments targeting TH1, TH2, and IL-23 pathways.

Capsaicin, found in chili peppers, can slow down hair growth by affecting skin cells and hair follicles.

Vitamin D and its receptor regulate skin functions like cell growth, immunity, hair cycle, and tumor prevention.

Alopecia areata causes hair loss, has no cure, and various treatments exist.

Peptide hydrogels heal burn wounds faster and better than standard dressings.

Keratinocytes help heal skin wounds by interacting with immune cells and producing substances that kill pathogens.

Cathepsin L is essential for normal hair growth and development.

Postpartum depression is linked to changes in brain chemicals, inflammation, stress, and certain genes, and can potentially be identified by markers like specific steroids, serotonin levels, and vitamin D levels.

Some viruses can cause cancer by changing cell processes and avoiding the immune system; vaccines and targeted treatments help reduce these cancers.

The niche environment controls stem cell behavior and plasticity, which is important for tissue health and repair.

Vitamin D is important for skin health and may affect conditions like psoriasis and hair loss, but more research is needed to understand its role fully.

Eating less sugar, milk, and saturated fats and more vegetables and fish may help treat and prevent acne.

Different types of stem cells with unique roles exist in blood, skin, and intestines, and this variety is important for tissue repair.

Antibiotics can reduce acne but may lead to resistant bacteria, and understanding the skin's bacteria is important for treatment.

Some vitamins and minerals like vitamin D and iron can help with certain types of hair loss, but more research is needed for others.

GABRA2 gene variations impact alcohol response, and hair loss medication finasteride reduces some effects.

Fat-derived stem cells show promise for skin repair and reducing aging signs but need more research for consistent results.

Tofacitinib may help treat severe hair loss, but more research is needed.

Human hair follicle organ culture is a useful model for hair research with potential for studying hair biology and testing treatments.

Damage to skin releases dsRNA, which activates TLR3 and helps in skin and hair follicle regeneration.

Prolactin contributes to hair loss by promoting hair follicle shrinkage and cell death.

Stress can stop hair growth in mice, and treatments can reverse this effect.

Men generally have more severe COVID-19 cases and higher death rates than women due to biological differences.

Foxp3 is crucial for regulatory T cell function, and targeting these cells may help treat immune disorders.

Janus kinase inhibitors are promising treatments for autoimmune skin diseases like eczema and psoriasis.

Stem cell plasticity is crucial for wound healing but can also contribute to cancer development.

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

Hair follicles produce and respond to melatonin, affecting hair growth and sensitivity to estrogen.