Our expert says:
The problem is that the foreskin can swell so tightly that it causes reduced blood flow to the tip of the penis. This could be a medical emergency. One should try to reduce the swelling and slip the foreskin back over the tip of the penis if possible. A way to do this is by squeezing the front part firmly by wrapping your hand around the penis for a few minutes to reduce the swelling. After a few minutes try to slip the foreskin back over the tip. If not possible it may be necessary to do a medical circumcision. The pimple could be an infection - you can try to put Bactroban ointment on this area.
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