Example image of eyePlorer eyePlorer map for 'Anxiety': Behavior Cognition Emotion Physiology Psychology Somatic Fear Feeling Suffering Worry Mood (psychology) Stimulus (psychology) Fight-or-flight response Normality (behavior) Stress (biology) Anxiety disorder Abdominal pain Chest pain Fatigue (medical) Nausea Palpitation Shortness of breath Tension headache Digestion Immune system Mydriasis Panic attack Myocardial infarction Amygdala Hippocampus Positron emission tomography Nucleus accumbens Epistasis PLXNA2 Polymorphism (biology) Generalized anxiety disorder Søren Kierkegaard The Concept of Anxiety Being Guilt Meaning (existential) Morality Paul Tillich Spirituality Theology Human condition Authority Reality Tradition Man's Search for Meaning