There are three mechanical conditions that prevent foreskin retraction: :* The tip of the foreskin is too narrow to pass over the glans penis. This is normal in children and adolescents. : :* The inner surface of the foreskin is fused with the glans penis. This is normal in children and adolescents but abnormal in adults. : :* The frenulum is too short to allow complete retraction of the foreskin (a condition called frenulum breve). Pathological<unk>  (as opposed to the natural non-retractability of the foreskin in childhood) is rare, and the causes are varied. Some cases may arise from balanitis (inflammation of the glans penis). Lichen sclerosus et atrophicus (thought to be the same condition as balanitis xerotica obliterans) is regarded as a common (or even the main) cause of pathological<unk> . This is a skin condition of unknown origin that causes a whitish ring of indurated tissue (a cicatrix) to form near the tip of the prepuce. This inelastic tissue prevents retraction.<unk>  may occur after other types of chronic inflammation (such as balanoposthitis), repeated catheterization, or forcible foreskin retraction.<unk>  may also arise in untreated diabetics due to the presence of glucose in their urine giving rise to infection in the foreskin. Beaugé noted that unusual masturbation practices, such as thrusting against the bed or rubbing the foreskin forward may cause<unk> . Patients are advised to stop exacerbating masturbation techniques and are encouraged to masturbate by moving the foreskin up and down so as to mimic more closely the action of sexual intercourse. After giving this advice Beaugé noted not once did he have to recommend circumcision.<unk>  in older children and adults can vary in severity, with some able to retract their foreskin partially (relative<unk> , while others are completely unable to retract their foreskin, even when the penis is in a flaccid state (full<unk> .
Phimosis
Lymphedema
Hypertrichosis
Hair tourniquet
Lipedema
Schooliosis
Acanthosis nigricans
Green nails