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Finasteride may decrease semen quality but not harm sperm production, and stopping the drug can improve semen quality; hyperprolactinemia can cause infertility but is treatable with medication.

Male hormones and their receptors play a key role in hair loss and skin health, with potential new treatments being explored.

Topical minoxidil 5% effectively improves hair density and width in men with androgenetic alopecia.

Mouse hair cells respond to male hormones by growing less, and this can be stopped by certain blockers.

Hair loss involves immune responses, inflammation, and disrupted signaling pathways.

A young man had a rare skin condition causing hair loss and forehead lesions.

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

The document explains how hair loss patterns in men and women, known as Androgenetic alopecia, are classified using the Hamilton-Norwood system for men and the Ludwig grade system for women.

Stem cell therapy is more effective than minoxidil for hair growth in androgenic alopecia.

The document explains how hair loss in men and women, known as Androgenetic alopecia, is categorized using the Hamilton-Norwood system for men and the Ludwig grade system for women.

Minoxidil effectively stimulates hair growth in androgenetic alopecia.

A rare benign tumor was found in a man's scrotum, highlighting the need for accurate diagnosis.

Hypothyroidism harms rat skin, but topical triiodothyronine may help improve it.

Acne keloidalis nuchae causes scarring on the scalp, mainly in African American males, and early treatment is important to prevent lasting damage.

Combining stem cell-conditioned media with anti-androgen drugs can improve hair growth in male pattern baldness.

An elderly man had a rare, large skin cyst on his lower back, which was removed by surgery.

Fibrosis in the bulge area of hair follicles can cause hair thinning in male pattern baldness, and drugs that inhibit fibrosis might help reverse this.

Bone marrow-derived stem cells greatly improve skin wound healing in rats.

Scientists created MUSIi010-A, a stem cell line from a balding man's scalp, to study hair loss and develop potential treatments.

Damaged hair follicle stem cells can cause permanent hair loss, but understanding their role could lead to new treatments.

Fibrosing alopecia in a pattern distribution is a unique hair loss condition that may respond to antiandrogen therapy.

Some men can have female pattern baldness without hormonal abnormalities or signs of feminization.

Certain 4-azasteroids are effective at blocking the enzyme that processes testosterone in human skin and could help treat acne, excessive hair growth, and male pattern baldness.

Reflectance confocal microscopy can tell apart white dots on the scalp as either sweat gland ducts or hair follicle openings.

Trichoscopy is not specific for diagnosing telogen effluvium and both telogen effluvium and androgenetic alopecia often occur together.

Dermoscopy shows that varying hair shaft thickness and single hair follicles are main signs of male pattern baldness, especially in the fronto-temporal region.

New hair regrowth model introduced, imiquimod kills skin cancer cells, T-cadherin loss makes skin cancer more invasive, no strong link between PTCH1 gene and skin cancer after transplant, and male teens more likely to have hereditary hair loss.

Eyelashes are important for looks and eye protection, and more people are treating sparse eyelashes; more research is needed to understand eyelash biology and improve treatments.

The document concludes that understanding hair loss patterns and careful surgical techniques are key for successful hair transplantation in oral and maxillofacial surgery.

A cancer drug caused unusual hair growth on a 100-year-old man's scalp and eyelashes.