Fear and tension are what you feel when you have the condition called anxiety.
Put it another way, it is a feeling of worry.
Anxiety goes deep until it determine the status of your emotional and psychological well being.
How to Tell if It is Dangerous or Not It's important to know first the level of anxiety you're currently in.
It is normal to have anxiety; the danger depends on how deep you have drowned in it.
An indication of danger is when anxiety lasts in the measures of months or even years despite the fact that what you feared has come to pass or did not happen at all.
Anxiety that generates constricted feelings in your chest is a serious case and you need to deal with it as fast as you can.
The List of Other Serious Symptoms:

• Tingling feelings, in your hand or feet
• Sweating
• Numbness
• Flashes, either hot or cold
• Nausea
• Breathlessness
• Diarrhea
• Trembling
• Dizziness
• Feelings of imminent death
• Heart palpitation
• A feeling that extremely horrible things are coming
• Chest pain
• Detachments
• Being afraid of losing control
• Time to Seek Help

Once you discover you're having the above symptoms it is time to find help and treatment.
Tightness in your chest is the worst signal of anxiety.
The Cure Find a quiet room or place to sit and relax.
That is one of the many ways to treat anxiety.
Taking this action with aid you in the effort to empty your mind.
If possible, avail yourself to calming music.
Very simple, very accessible treatments that you may want to try.
If anxiety persists or the tightness in your chest will not go away however, professional help is called for.