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Hair loss in Androgenetic alopecia (AGA) is due to altered cell sensitivity to hormones, not increased hormone levels. Hair growth periods shorten over time, causing hair to become thinner and shorter. This is linked to miscommunication between cell pathways in hair follicles. There's also a change in gene expression related to blood vessels and cell growth in balding hair follicles. The exact molecular causes of AGA are still unclear.

Dermoscopy is useful for identifying and tracking different types of hair loss without scarring.

PF-05314882 selectively activates androgen receptors without much effect on prostate and may help in prostate cancer treatment and hair loss prevention.

AP collagen peptides help hair grow and improve hair health.

The gene Ascl4 is not necessary for the development of hair, teeth, or mammary glands.

A new method using stem cell membranes to deliver Minoxidil improved hair growth in mice better than Minoxidil alone.

The new "whisker follicle microinjection assay" can test how different biomolecules affect hair growth and color.

A man had a non-cancerous neck tumor related to hair follicles removed with no return of the tumor.

KIF18B is important for correctly positioning cell division machinery in skin cells, affecting hair follicle development.

Rumex japonicas Houttuyn ethanol extract helps increase hair growth and protect against hair damage.

Bovines can have rare inherited skin diseases with specific symptoms like hair loss, fragile skin, and abnormal porphyrin buildup.

Researchers found key regions in the mouse hairless gene that control its activity in skin and brain cells, affecting hair follicle function.

Trichotillomania is a chronic hair-pulling disorder, more common in females, treated with therapy and sometimes medication.

Trichoscopy is a key method for dermatologists to quickly and effectively diagnose hair and scalp conditions.

Alopecia areata is a common autoimmune condition causing varying hair loss, diagnosed by specific patterns of inflammation around hair follicles, with several treatment options available.

The document concludes that permanent hair loss conditions are complex, require early specific treatments, and "secondary permanent alopecias" might be a more accurate term than "secondary cicatricial alopecia."

A woman with lupus had hair loss and skin issues that were successfully treated with medications.

Fish collagen peptides can significantly promote hair growth.

Hair loss in African American women, caused by hair care, genetics, and environment, needs more research for better treatment.

Cyclosporin doesn't stop hair loss.

Researchers found a white halo around hair in most patients with a specific type of hair loss, which helps in early diagnosis and treatment.

Hormones and genes affect hair growth and male baldness.

Microneedling with 5% minoxidil improves hair loss in Chinese men by activating Wnt/ß-catenin pathway.

Pediatricians should treat some hair loss types in children and refer others to a dermatologist.

Dog skin with hair loss, when transplanted to mice, regrew hair, suggesting the hair loss cause is likely body-wide, not skin-specific.

Dermoscopy helps diagnose different types of hair loss and may reduce the need for biopsies.

Mycophenolate mofetil may improve symptoms and stop hair loss in Lichen planopilaris, but more research is needed.

Trichoscopy is a useful tool for diagnosing different hair and scalp diseases by their unique visual features.

Hydroxychloroquine can help treat certain types of hair loss.

Scientists found new genetic areas that affect how rice root hairs grow and develop.