Side effect symptoms of men stopping finasteride have not been studied and published in any rigorous manner. Headaches are rarely reported by users of finasteride but then again DHT has been proposed to contribute to some types of headaches (ie migraines) - in which case blocking DHT with finasteride has been shown to help. In your specific situation, you will want to review your entire story with your doctor so he or she can obtain all the relevant details. That is really the only way one can determine if finasteride use or cessation has any role.Reference Dihydrotestosterone may contribute to the development of migraine headaches. Check JH, et al. Clin Exp Obstet Gynecol. 2013.