22 citations,
March 2000 in “Clinics in Dermatology” Many treatments for hair loss lack proper testing and FDA approval, so their effectiveness is uncertain.
65 citations,
January 2013 in “Cochrane library” Some systemic treatments work for nail psoriasis but can have serious side effects.
30 citations,
January 2000 in “Dermatologic Clinics” Finasteride and minoxidil are effective FDA-approved treatments for androgenetic alopecia.
January 1989 in “Springer eBooks”
194 citations,
May 2000 in “Journal of Investigative Dermatology” The hedgehog signaling pathway is crucial for hair growth but not for the initial creation of hair follicles.