<unk>  is usually caused by medical professionals (iatrogenic) or parents who handle the foreskin improperly. The foreskin may be retracted during penile examination, penile cleaning, urethral catheterization, or cystoscopy; if the foreskin is left retracted for a long period, some of the foreskin tissue may become edematous (swollen with fluid), which makes subsequent reduction of the foreskin difficult.
Paraphimosis
Pulicosis
Scarabiasis
Tungiasis
Naegleriasis
Dracunculiasis
Trichinosis
Trichoptilosis