A functional disorder of blood vessels caused by nervous system malfunction, without any physical structural damage.
From Greek 'angeion' (vessel) + 'neuron' (nerve) + '-osis' (condition). This older medical term bridges cardiology and neurology, describing psychosomatic vascular symptoms common in early 20th-century medicine.
Angioneurosis explains why extreme stress or anxiety can make your hands cold, your face flush, or your heart race—your nervous system is misfiring and confusing your blood vessels.
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