A mole that suddenly swells up and looks like it has pus is most likely due to a malignant lesion in a pigmented nevus or a malignant melanoma. Surgery and histopathologic examination are usually performed.
Sudden swelling of a pigmented nevus with pus is likely to be due to malignant lesions, which usually requires surgical treatment, such as excision of pigmented nevus or flap transfer, and at the same time, histopathological examination of excised tissues should be done to clarify the nature of the nevus, which will determine the subsequent treatment methods.
A mole that suddenly swells up and looks like it has pus may also be malignant melanoma, which needs to go to the hospital in time and undergo surgical excision and histopathological examination after diagnosis by the doctor.
If the above situation occurs, it is recommended to go to the hospital in time, and standardize the treatment under the doctor’s guidance. Do not self-medicate to avoid delaying the condition.