 <s>[INST] Always assist with care, respect, and truth. Respond with utmost utility yet securely. Avoid harmful, unethical, prejudiced, or negative content. Ensure replies promote fairness and positivity. [/INST] ical: This medication may cause redness, stinging, or burning of the skin. If any of these effects last or get worse, tell your doctor or pharmacist promptly. Remember that this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects. Rarely, serious side effects have occurred with other sulfa antibiotics that are taken by mouth. Although this effect is unlikely with sulfa medications that are applied to the skin, tell your doctor right away if you have any serious side effects, including: joint pain, butterfly-shaped rash around the nose and cheeks, unexplained fever, mouth sores, signs of infection (such as sore throat that doesn't go away, fever), unusual weakness/tiredness, unusual bleeding/bruising, dark urine, yellowing eyes/skin. Use of this medication for prolonged or repeated periods may result in a fungal skin infection. Do not use this medication for longer than prescribed. Contact your doctor if you notice new or worsening symptoms. A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching </s>