Hair removal cream maybe? You could have had a reaction to the shaving cream you were using. If you continue shaving just make sure you have a hot bath/shower at least 20 minutes beforehand and then shave gently in the direction of the hair. Maybe use a shaving cream for sensitive skin? Ive found that if i shave too much over the same spot i get razor burn so perhaps buy a better razor? Someone mentioned using mens ones for getting a closer shave so maybe thats an idea. Do you always moisturize afterwards? I have too or my legs go terribly bumpy and itchy. Pat the area dry with a towel instead of rubbing then use something fragrance free and hopefully this should help. All the best.