Thanks for posting your query at DoctorSpring.com. I can understand your concern. Apologies for the exceptional delay with respect to the reply.
From the picture, the lesions seems to be molluscum contagiosum which is a viral infection. It is a form of std. But however it resolves with treatment.
The best treatment for it would be extraction by your dermatologist.
That would make sure the lesion resolves.
Please let me know if you have any queries.Take care