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A 4-year-old boy with a rare type of rickets and hair loss improved in bone health but not hair growth after vitamin D and calcium treatment.

As skin cells mature, vitamin D receptor levels decrease while retinoid X receptor α levels increase.

Removing part of the vitamin D receptor stops vitamin D from working properly.

Mice without the vitamin D receptor gene lose hair due to disrupted hair follicle cycles.

The hair test for vitamin D could be a useful alternative to blood tests, providing a longer-term vitamin D status, but more research is needed.

CXXC5 can both suppress and promote cancer, making it a complex target for treatment.

High CRP levels could indicate vitamin D deficiency in people with alopecia areata.

Two siblings with a genetic mutation had a form of rickets that doesn't respond to vitamin D.

Mixing calcipotriol with a steroid is almost as effective as using a steroid alone for alopecia areata and has fewer side effects.

Cholesterol sulfate buildup due to a genetic mutation disrupts the skin barrier, leading to the scaling skin seen in X-linked ichthyosis.

Hormonal treatment is effective for women with acne not helped by usual treatments, especially if they have hormonal imbalances.

The document concludes that inflammation markers can be used in diabetes, vitamin D3 affects immune pathways, hyperthyroidism changes hormone levels, androgen levels help diagnose Adrenocortical Carcinoma, erectile dysfunction is linked to diabetes, hypogonadism is common in HIV-infected males, and hormones can be biomarkers for various conditions.

The document concludes that early diagnosis and treatment are key for pediatric hair loss disorders, and addressing the emotional effects on children is important.

Involucrin gene expression is controlled by specific proteins and signaling pathways.

Calcipotriol works almost as well as clobetasol for mild to moderate alopecia areata with fewer side effects.

The review found no clear link between vitamin D receptor gene variations and polycystic ovary syndrome.

Estrogens generally inhibit hair growth and improve skin quality, but their exact effects on hair follicles are complex and not fully understood.

Updated treatments for female hair loss include minoxidil, antiandrogens, hair transplants, and light therapy.

Parathyroid hormone-related protein helps control hair growth phases in mice.

Hair follicle culture helps develop new treatments for hair loss.

CXXC5 is a protein that controls cell growth and healing processes, and changes in its activity can lead to diseases like cancer and hair loss.

Scalp cooling is the only FDA-approved method to prevent hair loss from chemotherapy, but other treatments like minoxidil and PRP are being tested.

The Foxn1 gene mutation causes hairlessness and immune system issues, and understanding it could lead to hair growth disorder treatments.

Epithelial-mesenchymal interactions control hair growth cycles through specific molecular signals.

Hormones affect skin aging and fat distribution, and treatments can help, but only minoxidil is proven for female hair loss.

Chemotherapy causes hair loss by damaging hair follicles and stem cells, with more research needed for prevention and treatment.

TGF-β2 plays a key role in human hair growth and development.

Methotrexate and vitamin D3 are potentially more effective and safer than triamcinolone for treating localized alopecia areata.

Inflammation may be linked to hair loss, and targeting specific enzymes could help treat it.

Phthirusa pyrifolia extract may lower testosterone and harm male rat reproduction without damaging the liver or kidneys.