What medical condition is indicated by small blisters on the penis head?

Patient's question:

Age
Detailed medical condition and purpose of consultation: In recent days, I noticed some itching on the glans. Upon closer inspection, I found some white, blister-like things on the glans. The size of the blisters is only as big as a needle tip.
Duration of onset and current duration: 7 days
Current general condition: Itching and pain on the glans
Medical history: None
Previous diagnosis and treatment history and effectiveness: No previous diagnosis or treatment history.
Auxiliary tests: None
Other: What is the symptom of this disease, and how should it be treated?

Doctor's answer:

Your condition could be considered balanoposthitis, which may be caused by unsafe sexual practices or phimosis. Infections with Staphylococcus, Streptococcus, Escherichia coli, Candida albicans, Trichomonas, Chlamydia, Mycoplasma, fungi, Neisseria gonorrhoeae, or other bacteria can all cause it. Alternatively, if the foreskin is too long and not cleaned properly, smegma—the accumulation of unclean substances between the foreskin and the glans—can build up and irritate the local foreskin and mucosa, leading to inflammation. Additionally, unsafe sexual practices cannot be ruled out as a possible cause of sexually transmitted diseases. Therefore, it is recommended to consult an infectious disease specialist for a definitive diagnosis to enable timely and appropriate treatment.

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