Why does it get itchier after using Langdu ointment?

Increasing itching after using Langdu ointment is usually caused by an allergic reaction. The detailed explanation is as follows:

"Langdu ointment" is a general term for a class of medications rather than referring to a single specific drug. These medications are extracted from the plant Euphorbia fischeriana and are typically applied externally, primarily used for treating conditions such as fungal infections. If a patient is allergic to the medication or any of its ingredients, it may easily irritate the local skin, triggering an allergic immune response that leads to itching. In severe cases, the affected area may also develop redness (congestion) and swelling (edema). It is recommended to discontinue the medication immediately if such symptoms occur, to prevent worsening of the allergic reaction, and to wash off any residual ointment with clean water. For severe reactions, antihistamines such as loratadine tablets or levocetirizine hydrochloride tablets may be used under medical guidance.

It is advisable to use any medication only under the supervision of a healthcare professional to avoid potential harm caused by improper use. If a fungal infection is present, maintaining personal hygiene in daily life is important, and sharing personal items with others should be avoided to prevent cross-infection.