noun
agoraphobia
Medical term for the anxiety disorder characterized by fear of places or situations where escape might be difficult.
広場恐怖症の人は、混雑した場所を避ける傾向がある。
People with agoraphobia tend to avoid crowded places.
Compound of 広場 (open space) + 恐怖症 (phobia), a calque of the English 'agoraphobia'.