Dyclonine hydrochloride is primarily used as a local anesthetic in various medical and dental procedures. It is effective in numbing the skin or mucous membranes, making it useful for minor surgical interventions, such as the removal of warts, skin biopsies, or dental work. It is also applied topically to relieve pain and discomfort associated with conditions like sore throat, mouth ulcers, or minor burns. In ophthalmology, it is sometimes used to anesthetize the eye before certain diagnostic or therapeutic procedures. Its rapid onset of action and relatively low systemic absorption make it a preferred choice for localized pain relief in clinical settings.