Hi, thank you for your question. Genital ulcers have different causes, which can be an infection or non-infective. It is commonly caused by sexual trasmitted infection (STI), such as syphilis, genital herpes, chancroid, fungi or some other bacterial infections. For non infective causes, it can be due to trauma, psoriasis, medications or behcet syndrome.

As you mentioned you had this problem before, is there any treatment or doctor appointment made during that period of time ? From the description , it is most likely due to previous condition, but it also could be a new problem. If you suspect yourself to have STI, having unprotected sex or having multiple partners can increase the risk of infections.

Therefore, the best suggestion is to seek help from healthcare providers. Doctor will ask you some questions regarding the duration, onset, progression and associated symptoms of the genital ulcers.

You may experience painful urination, penile discharge and burning sensation for STI. Since you are worrying about possible STI, doctor will need to know your sexual habits, as these are important clues for diagnosing STI.

To confirm the cause of infection, doctor take swab around the genital ulcers for laboratory tests. In the case of syphilis infection, penicillin injections will be given to the patient with varying dosages based on your conditions.

However, treatment is different for other infections such as genital herpes, fungi infection, chancroid or bacterial infections. You should not attempt to treat yourself through buying over the counter medications. Hope i answered you question and have a good day ahead !!!