This site discusses phimosis in its specific forms of phimotic ring, frenulum breve, adhesions or skinbridges. During erection these conditions inhibit the relationship between foreskin and glans. This functionally restricts the erection, and thus has an effect on the sexuality. With our culture's attitudes on health care, it would be appropriate to monitor boys before puberty and encourage early prevention.

2012 : note from author: My previous idea of monitoring boys before puberty is impractical, unecessary and now only of historical interest. please see Postscript.

updates and supporting education on new site : Phimosis.cloud

FRENULAR CONFUSION

>Robin,
>Enjoyed your informative website greatly. I am a 27-year old who experiences
>difficulty in retracting my foreskin, but I'm not sure if the phimotic ring
>you describe exists. The problem seems to lie more in the frenulum, which
>does not seem to allow the foreskin on the underside of the penis to pull
>back as far as that on the topside. The frenulum is connected not so much at
>the base of the head (as pictures seem to indicate) but more towards the tip
>of the penis. I do not experience much difficulty pulling the foreskin back
>when flaccid, but it's near-impossible when erect. It hurts a hell of a lot,
>to say the least. Any insights into this you might offer would be
>appreciated.
Thanks.

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your self diagnosis is accurate you have frenulum breve,

most pics and most frenulums do join at base of the glans a picture of one joining at the tip of the penis may be helpful for the general information if you`ve got a web cam, and could endure the pain while retracting for a quick shot, ... before getting an op.
http://www.male-initiation.net/frenulum_breve.html
has links to treatment
good luck
Robin