Fears of shrinking of the penis in folklore have led to a type of mass hysteria called penis panic, though the penis legitimately can shrink in size due to scar tissue formation in the penis from a medical condition called Peyronies disease. Marketers of penis enlargement products exploit fears of inadequacy, but there is no consensus in the scientific community of any non-surgical technique that permanently increases either the thickness or length of the erect penis that already falls into the normal range. Shrinking and enlarging
Widespread private concerns related to penis size have led to a number of folklore sayings and popular culture reflections related to penis size. Penis panic is a form of mass hysteria involving the believed removal or shrinking of the penis, known as genital retraction syndrome. The penis can significantly shrink due to scar tissue formation from a condition called Peyronies disease which affects up to 10% of men. Products such as penis pumps, pills, and other dubious means of penis enlargement are some of the most marketed products in email spam. At present there is no consensus in the scientific community of any non-surgical technique that permanently increases either the thickness or length of the erect penis that already falls into the normal range (4.5" to 7"). Among male homosexuals
A study undertaken at Utrecht University found that the majority of gay men in the study regarded a large penis as ideal, and having one was linked to self-esteem.
It is not a life-threatening disease, and it is not contagious.Dermographism may occur in mastocytosis (systemic mast cell proliferation). Diagnosis
This condition is diagnosed by a health care provider writing or drawing on the patients skin with a tongue depressor or other implement, to see whether a red wheal appears soon afterwards. Treatment
Dermographism can be treated by substances which prevent histamine from causing the reaction (i.e. an antihistamine). These may need to be given as a combination of H1 antagonists, or possibly with an H2-receptor antagonist such as cimetidine. Over-the-counter vitamin C, 1000 mg daily, increases histamine degradation and removal.Refraining from taking hot baths or showers may help if the condition is generalized (i.e. all over), as well as possibly for localized cases (i.e. in a specific area). If taking hot showers helps, it may be a condition called shower eczema. If it affects mainly the head, it may be psoriasis. In rare cases, allergy tests may uncover substances the patient is allergic to.While cromoglycate, which prevents histamine from being released from mast cells, is used topically in rhinitis and asthma, it is not effective orally for treating chronic urticaria. See also
Triple response of Lewis

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