Dandruff cannot cause hair loss.
While claims abound that dandruff causes hair loss and balding, there is no scientific evidence that it does. Though unsightly, dandruff is normal. Almost everyone experiences it at some point in his or her life, though it afflicts men more often. (For more on that, check out a recent post of mine titled, “The Truth About Men and Dandruff.“)
If you have dandruff and are experiencing patchy hair loss, then it could be any number of other hair loss diseases, including male pattern hair loss or alopecia aerata. See your dermatologist who can help you.
Photo credit: FCC, Carolyn P. Speranza