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Androgens increase norepinephrine release, promoting smooth muscle growth in male sex organs, which may contribute to benign prostatic hypertrophy.

Activin A speeds up ear hair cell differentiation, while Follistatin slows it down.

Activin A and follistatin control when ear hair cells form in mice.

Activin A promotes ear hair cell development, while follistatin delays it.

Women with excessive hair growth tend to have shorter index and ring fingers compared to others.

5α-reductase-2 deficiency causes ambiguous genitalia at birth and affects male sexual development, but individuals often develop male characteristics at puberty.

Blood cells turned into stem cells can become skin cells similar to normal ones, potentially helping in skin therapies.

Researchers found that certain miRNAs, which affect immune system regulation, are differently expressed in mice with a hair loss condition compared to healthy mice.

The back of the scalp has more nerve fibers than the front, which may explain why some people feel more sensitivity there.

Hair transplant surgery can sometimes lead to nerve pain in the face.

Skin changes throughout life, from development before birth to aging effects like wrinkles, influenced by both genetics and environment.

Hair restoration surgery in patients with prior neurosurgery or radiation treatment can have risks like infection and poor wound healing, so it's important to discuss these with the patient.

A man experienced skin death after a hair transplant, likely due to poor blood supply related to his smoking habit.

Social or cultural norms, not hair type, more likely influence how often people wash their hair.

Hair with more melanin resists weather damage better.

Hair coloring and bleaching can permanently break down hair protein and temporarily change its properties.

The document concludes that corticosteroids effectively treat vasculitis allergica in over 90% of cases, with long-term kidney issues being the main adverse outcome.

Oral minoxidil has more side effects but can be more effective than topical minoxidil.

Patients and doctors often differ in assessing hair loss severity, so treatment should be personalized.

Trichoscopy effectively distinguishes between severe and mild male pattern hair loss.

Smoking and drinking can lower vitamin levels and potentially trigger early hair loss, but overall vitamin levels don't seem to affect hair loss duration.

Men generally have more severe COVID-19 cases and higher death rates than women due to biological differences.

The research identified various cell types in mouse and human teeth, which could help in developing dental regenerative treatments.

Patients with this syndrome can have different responses and worsening resistance to treatment over time.

Finasteride, CPA, and flutamide are all equally effective in reducing excessive hair growth in women.

Notch/RBP-J signaling is crucial for proper placement and timing of melanocyte development in hair follicles.

Human hair proteins vary by individual, body site, and ethnicity, useful for forensics.