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Stress can lead to hair loss by affecting hair-follicle stem cells, and this loss is harder to recover from if one has male pattern baldness (MPB). Treatments like finasteride and minoxidil are used to address hair loss, but stress-related hair loss differs from androgenic alopecia.

Scientists have grown natural-looking hair from stem cells, potentially revolutionizing hair growth treatments. Concerns include cost, DHT resistance, and the need for future procedures.

Ultrasound imaging can non-invasively detect active and inactive hair follicles, inflammation, and fibrosis, potentially reducing unnecessary biopsies. It may help assess hair growth potential and diagnose scalp issues, but some users believe in trying treatments regardless of ultrasound results.

Hair follicles usually go dormant rather than die, and treatments like finasteride, minoxidil, and hormone therapy can sometimes reactivate them, though results vary. Complete regrowth is rare, especially in long-term bald areas, but some individuals see significant improvement with these treatments.

Tretinoin can increase hair follicles and is used alongside minoxidil and finasteride for hair growth, though it may cause skin peeling. Users report varying results, with some experiencing regrowth and others questioning its efficacy for hair.