One sip of cold water should not make you stop mid-conversation. One bite of something sweet should not send a sharp signal through your teeth. Yet tooth sensitivity does exactly that for many people. It turns simple habits into uncomfortable moments. You may start avoiding ice, hot tea, citrus fruits or even regular brushing because your teeth react too quickly. The problem may feel small at first, but it often points to enamel wear, gum recession, exposed tooth roots, cavities, grinding or damaged dental work.