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

The guideline offers practical advice for diagnosing and treating Post-COVID/Long-COVID.

Accurate diagnosis and effective oral treatment are key to managing tinea capitis and preventing its spread.

TGF-β is crucial for controlling stem cell behavior and changes in its signaling can lead to diseases like cancer.

Different types of stem cells in hair follicles play unique roles in wound healing and hair growth, with some stem cells not originating from existing hair follicles but from non-hair follicle cells. WNT signaling and the Lhx2 factor are key in creating new hair follicles.

Tributyltin exposure causes sex changes, sterilization, and decline in the snail Ocinebrina aciculata, risking its extinction.

Finasteride helps hair growth but may cause sexual side effects.

Male and female skin differ due to hormones, affecting conditions like hair loss, acne, and skin cancer, and suggesting a need for gender-specific treatments.

Humans lost body hair relatively recently in evolution.

Guidelines for diagnosing common hair loss include detailed history, clinical examination, and various diagnostic techniques.

Silver can help prevent and treat infections but its effectiveness varies and should be weighed against costs and side effects.

Minoxidil works better for female hair loss, but cyproterone reduces scalp oiliness and causes menstrual issues.

Hair follicle patterns form through a mix of self-organization and signaling interactions.

Alopecia areata is an autoimmune disease causing patchy hair loss, often with other autoimmune disorders, but its exact causes are unknown.

Laser device increases hair density, safe for treating hair loss in men and women.

Some drugs can cause hair loss or increase hair growth, but these effects are usually reversible when the drug is stopped.

Paneth cells help support stem cells and aid tissue regeneration after injury.

Lupus affects the body and skin, causing joint pain and skin issues that can be treated with steroids and antimalarial drugs.

Telogen effluvium is a common type of hair loss that can resolve on its own or become chronic, with treatment depending on early diagnosis.

Skin aging is due to impaired stem cell mobilization or fewer responsive stem cells.

Taxane chemotherapy can cause skin, hair, and nail side effects, which are often under-reported and can affect patient quality of life.

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.

Transplant success has improved with better immunosuppressive drugs and donor matching.

Protoporphyrin IX is useful in cancer treatment but can cause health problems if not properly regulated.

Estrogen replacement can improve skin health in menopausal women but doesn't reverse sun damage or prevent hair loss.

Matriptase is crucial for keeping epithelial tissues healthy and functioning properly.

Estrogen loss during menopause worsens skin health, but hormone replacement therapy may improve it, though more research is needed.

Stem cell therapy, particularly using certain types of cells, shows promise for treating hair loss by stimulating hair growth and development, but more extensive trials are needed to confirm these findings.

PRP treatment improves hair growth, and the device used can affect results, with some being more effective.