The appearance of a hard bump on the nose that hurts when you touch it may be due to folliculitis, or it may be caused by factors such as acne or nasal boils. 1. Folliculitis: stagnation of the hair follicles due to infection of the nasal mucosa by pathogens such as Staphylococcus aureus, which may result in pain and itching. 2. Acne: a chronic inflammatory disease of the sebaceous glands of the hair follicles, characterized by pustules, nodules and cysts, and often accompanied by seborrhea, which can also be painful to touch. 3. Nasal boils: a kind of confined acute suppurative inflammation of the hair follicles in the nasal vestibule, the nose and the sweat glands in the tip of the nose, etc., which can also appear as a hard bump on the nose that hurts when touched. If the above symptoms occur, it is recommended to consult a doctor in time to identify the cause of the disease and actively cooperate with the doctor’s treatment.