Anxiety neurosis is a mild deviation of mind with unpleasant, distressing emotion usually to be distinguished from fear. Neurosis, also known as psychoneurosis or neurotic disorder, is a "catch all" term that refers to any mental imbalance that causes distress, but, unlike a psychosis or some personality disorders, does not prevent rational thought or an individual's ability to function in daily life. The diverging views on suicide risk in patients with morbid anxiety called for a sufficiently large study to estimate the suicide risk in patients with anxiety neurosis and depressive neurosis. Vegetative signs of dilation of pupils, facial pallor, bounds of sweating, tachycardia, dryness of mouth, diarrhea, loss of appetite, insomnia, decrease in libido and potency, increase in blood pressure and blood sugar level etc accompany anxiety syndromes. Problems also arise with the confusion of "anxiety neurosis" with "anxiousness", the latter being a symptom rather than a syndrome. Anxiousness may occur with any psychiatric disorder, but anxiety neurosis only occurs in the absence of other psychiatric symptoms. Lastly, it may also be difficult to separate anxiety from mild depressive states. The symptoms and disabilities associated with them are very often less severe than those encountered in the psychoses. Like the latter, however, they occur in people whose mental and intellectual development had been proceeding normally. They will be with frowned face, gloomy look and confusion. They feel inferior in every activity. Many patients suffer from diarrhoea without the usual cause, which make the practitioners to diagnose as IBS the irritable bowel syndrome .