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increasing rapidly above the usual level

Increase rapidly above the usual level.

It is a type of disorder that causes fear in social settings.

partcipate in social activities; mix socially with others.

the study of the development, structure, and functioning of human society.

comfort or consolation in a time of great distress or sadness

only or simply

a bird, mammal, or insect living alone or in pairs, especially in contrast to related social forms.

Reduce discomfort  

Gentle calming effect