Nightmares and fears • English Conversation Questions

What is the difference between a nightmare and a fear?
What causes nightmares?
What are common themes in nightmares?
Is it normal to experience nightmares and fears?
Can nightmares and fears be a symptom of a larger problem?
How can someone reduce the frequency of nightmares or fears?
What is the difference between a phobia and a fear?
How does our brain process nightmares and fears?
Are there any methods of dealing with nightmares or fears?
What are the potential health effects of chronic nightmares or fears?
Are there any cultural differences in how nightmares or fears are perceived or treated?