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Nonscarring alopecia has higher hair density than scarring alopecia, and hair density can help diagnose the type of alopecia.

Transverse scalp sections are better for diagnosing non-scarring hair loss, while vertical sections are better for a specific scarring hair loss called lichen planopilaris.

The hair follicle bulge is an important area for adult stem cells involved in hair growth and repair, with potential for medical use needing more research.

Horizontal scalp biopsy sections are better for diagnosing alopecia areata, showing fewer hair follicles and more miniaturized hairs.

Human hair follicles can regenerate and recover after severe injury by going through a brief abnormal resting phase before growing again.

A young woman's Cronkhite-Canada syndrome improved on its own after she gave birth.

Follicular Unit Transplantation is an effective and safe treatment for hair loss due to scarring.

A 66-year-old man with a rare case of male frontal fibrosing alopecia did not regrow hair despite treatment.

Follicular unit hair transplantation is the standard method for natural-looking hair restoration in androgenic alopecia.

Stem cells can help regenerate hair follicles.

The article concludes that hair loss is a common side effect of drugs treating skin cancer by blocking the hedgehog pathway, but treatment should continue, and more selective drugs might prevent this side effect.

Abnormal cuticle and hair shaft medulla cause hair loss in androgenetic alopecia; sonography helps diagnose and manage it.

Canine epidermal neural crest stem cells could be a promising treatment for spinal cord injuries in dogs.

The conclusion is that accurate diagnosis of different types of hair loss requires careful examination of tissue samples and understanding of clinical symptoms.

Topical melatonin and brushing did not affect hair regrowth in Siberian Huskies.

Male pattern baldness involves hormone-related hair thinning, shorter hair, and inflammation.

Injury changes how hair follicle stem cells behave, depending on the hair growth stage.

Hair loss in Cronkhite-Canada syndrome is reversible by treating the gut issues and doesn't need steroid treatment for the hair itself.

The monkey's hair loss was due to an autoimmune disease, not genetics.

Hair follicles are essential for skin health, aiding in hair growth, wound healing, and immune function.

CBD can either reduce inflammation and not affect hair growth at low levels or inhibit hair growth at high levels.

Injecting a mix of human skin and hair cells into mice can grow new hair.

Gene regulation could revolutionize hair color by altering pigmentation from within.

HIV-1 may cause increased stem cell death in hair follicles, leading to hair loss.

The study suggests computer-assisted analysis of scalp biopsies could improve hair loss diagnosis but needs more validation.

The document concludes that immune system abnormalities cause alopecia areata, but the exact process is still not completely understood.

Propranolol combined with injections caused skin changes in guinea pigs but didn't fully mimic psoriasis.

Cannabinoid receptor-1 signaling is essential for the survival and growth of human hair follicle stem cells.

Advanced therapies like gene, cell, and tissue engineering show promise for hair regrowth in alopecia, but their safety and effectiveness need more verification.

Telocytes in the scalp may help with skin regeneration and maintenance.