It is suggestive of a condition known as Phemosis. The foreskin opening is in such a case is tighter, it can cause difficulties with retracting the skin backwards. The constriction can be very severe in some. Depending upon the degree of tightness, the management can be decided. It being a primary surgical problem, the treatment would be surgical correction of the foreskin skin. If not treated timely, it may predispose towards frequent skin infections and can cause discomfort while intercourse.
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It is treatable.