Penis enlargement is the goal of a number of men dissatisfied with their penis size. In general, where there is a perceived problem with penis size, medical advice should be sought, rather than attempting self-treatment. Most self-treatment methods are believed to be either ineffective, dangerous or both.
A survey by many sexologists showed that almost all men who believed that their penis was of inadequate size actually had a normal-sized penis. Most sexologists believe that a desire for penis enlargement comes from some other source of anxiety (see also penis panic) or perceived lack of masculinity.
Very few men have a very small penis: this is known as a micropenis, and is a very unusual condition which will generally have been detected in early childhood. Penis-enlargement self-treatments are also not effective on this condition.
Many commercial advertisements are sent via e-mail spam, direct mail, and in sexually-oriented magazines for penis enlargement aids. These are almost universally misleading and in the case of e-mail spam, are perceived as disturbing or offensive by many recipients.