Anxiety HP:0000739 Anxiety SNOMEDCT_US:48694002 Anxiety disease UMLS:C0003467 Excessive, persistent worry and fear Anxiousness UMLS:C4020884 Intense feelings of nervousness, tension, or panic often arise in response to interpersonal stresses. There is worry about the negative effects of past unpleasant experiences and future negative possibilities. Individuals may feel fearful, apprehensive, or threatened by uncertainty, and they may also have fears of falling apart or losing control. Abnormality of mental function