The Shedding Paradox: Why Finasteride Causes Short-Term Hair Loss on the Way to Long-Term Retention
Many men starting finasteride are alarmed to find more hair in the shower drain during their first few months of treatment — precisely when they expected improvement. Understanding the biology behind this counterintuitive response not only prevents premature discontinuation, but also helps patients recognize when shedding has crossed from expected adjustment into a reason to call their physician.