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Immune checkpoint inhibitors used in cancer therapy can cause hair loss, and understanding this can help manage the side effect.

Melanocytes in the outer root sheath are likely stem cells that grow fast but stay immature.

Fzd2 is important for skin and hair development through various signaling ways.

Alopecia areata involves immune system issues and specific cell types that disrupt hair growth, leading to hair loss.

Blocking the CXCL12–CXCR4 axis may help treat hair loss in alopecia.

Tight junctions create a barrier in pig hair follicles that controls what can enter the skin.

A 17-year-old developed woolly hair nevus in adolescence, which is unusual, and over time the hair darkened and straightened slightly, but microscopic changes persisted.

The tumor on the man's nose was a rare type called pedunculated follicular hamartoma.

IL-17 is more important than IFN-γ in causing severe hair loss in chronic alopecia areata.

Increasing the levels of a protein called FGF9 can promote hair growth, but humans may not respond the same way due to a lack of certain cells.

Balding doesn't reduce the number of hair follicles, it just makes them smaller.

Hair loss in male pattern baldness is linked to changes in immune cell behavior around hair follicles.

Substance P may contribute to hair loss by increasing oxidative stress and mitochondrial activity in hair follicles.

Different scalp conditions can lead to hair loss or tumors, with treatments varying from creams to surgery; early detection is crucial.

Some congenital hair disorders improve with age and can be managed with treatments like minoxidil, retinoids, supplements, and gentle hair care, but there's no cure.

Hair growth and development are controlled by specific signaling pathways.

Topical treatments can regrow hair on bald scalps.

Human hair follicles produce and respond to erythropoietin, helping protect against stress.

Fibroblasts play a key role in hair loss by affecting hair growth and causing inflammation.

The study found certain scalp biopsy features can help tell apart alopecia areata from pattern hair loss even when typical immune cells are not seen.

Trichofolliculoma is a unique benign tumor mainly affecting middle-aged adults' faces, often misdiagnosed without histopathology.

BTNL2 helps protect hair follicles from immune attacks, which could aid in treating alopecia areata.

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

A rare hair disorder with multiple hairs from one follicle was found on a patient's abdomen.

Hair loss that spreads out can often fix itself or be treated by finding and handling the cause.

The review found that specific changes in scalp tissue can help diagnose different types of hair loss.

The study showed that some hair follicle stem cells wake up to grow hair while others stay asleep, and that the environment around them is important for hair growth.

The document concludes that a unique target-like hair regrowth pattern in alopecia areata may be more common than thought and should be properly identified.

Hair cells grown in a lab showed specific hair proteins.

The document concludes that understanding hair follicle biology can lead to better hair loss treatments.