In most cases, canker sores and boils can be distinguished from each other by their causes, symptoms, and treatments. 1. Causes: Carbuncles are mainly caused by Staphylococcus aureus infections; boils can be caused by Staphylococcus aureus infections, as well as anemia, late nights, alcoholism, skin acne, diabetes, and other factors. 2. Symptoms: The typical symptoms of carbuncle are hard and swollen skin, heat and pain, dark red skin color, and even blisters of different sizes; boils are pink raised pimples at the initial stage, and as inflammation spreads, hard lumps are formed in the surrounding tissues, accompanied by redness, swelling, fever, pain and other symptoms. 3. Treatment: Carbuncles are usually treated with roxithromycin and compound acetylsalicylic acid tablets; boils are usually treated with local ichthyol ointment and erythromycin ointment to reduce the inflammatory reaction. The use of medication should follow the doctor’s prescription. It is recommended that patients seek timely medical treatment to diagnose carbuncles and boils through the right way and treat them in time to avoid delaying the condition.