Pain after applying zinc oxide sulfur ointment to the scrotum can be caused by a variety of reasons. This could be related to skin allergies, infections, or other skin problems.

Zinc oxide sulfur ointment is a commonly used ointment for treating skin inflammation and infections, such as eczema and dermatitis. If an individual is allergic to any of the ingredients in zinc oxide sulfur ointment, allergic reactions such as redness, swelling, itching, or pain may occur after application. If the skin at the application site is broken or infected, the use of zinc oxide sulfur ointment may worsen the pain or even cause the infection to spread.

Another possibility is that there may be other skin problems at the application site, such as fungal or bacterial infections, which can worsen the pain after applying the ointment. The nature and duration of the pain can help determine the specific cause; for example, persistent pain may indicate chronic inflammation or infection.

For patients experiencing pain after applying zinc oxide sulfur ointment, there are some key precautions to be aware of. If the pain is accompanied by significant redness, swelling, pustules, or fever, this may be a sign of worsening infection, and immediate medical attention is necessary. Avoid self-diagnosis and treatment, as individual skin conditions and reactions vary; a professional doctor's diagnosis and advice are essential.
[Prevention Tips:]
1. Before using any ointment, perform a small-area skin test to observe for any allergic reactions.
2. Keep the application area clean and dry to prevent infection.
3. If any abnormal reaction occurs after applying the ointment, discontinue use immediately and consult a doctor.