Three Japanese Social Ills

Taijin kyofusho - the fear of interpersonal relations, which can be broken down into four sub-categories:

1. sekimen-kyofu - the phobia of blushing
2. shubo-kyofu - the phobia of having a deformed physique
3. jikoshisen-kyofu - the phobia of eye-to-eye contact
4. jikoshu-kyofu - the phobia of having foul body odor

Parasaito shinguru - a.k.a., parasite singles - Japanese individuals that live with their parents until their late twenties or early thirties in order to enjoy a carefree lifestyle. 

Hikikomori (see also) - social retraction syndrome - the withdrawing from social life, particularly by adolescents.  Similar to agoraphobia.