Shyness

thumb |upright=1.6| Shyness is a personality trait distinct from Extraversion and introversion|introversion and [[social anxiety disorder.]]

lack of contact between an individual and society, which is a risk factor for one of any age

thumb|upright=1.3|Svetlana reflects herself in the mirror (painting by [[Karl Briullov, 1836).]]

Paruresis, also known as shy bladder syndrome, is a type of phobia in which a person is unable to urinate in the real or imaginary presence of others, such as in a public restroom. The analogous condition that affects bowel movement is called parcopresis or shy bowel.

media hypothesis

Parcopresis, also termed psychogenic fecal retention or shy bowel, and known colloquially as poop shy, is the inability to defecate without a certain level of privacy. It can be either a difficulty or inability to defecate due to significant psychological distress, and is associated with avoidance in public and social situations. It is typically researched alongside and has comorbidity with paruresis, which is an inability or difficulty to urinate in the presence of others.

Erethism, also known as erethismus mercurialis, mad hatter disease, or mad hatter syndrome, is a neurological disorder which affects the whole central nervous system, as well as a symptom complex, derived from mercury poisoning. Erethism is characterized by behavioral changes such as irritability, low self-confidence, depression, apathy, shyness and timidity, and in some extreme cases with prolonged exposure to mercury vapors, by delirium, personality changes and memory loss. People with erethism often have difficulty with social interactions. Associated physical problems may include a decreas