hii dear etiology of stress and anxiety can be psychological or biological psychological are due to past forgotton whshed or desire which are in our subconscious mind which is activated by current precipitating situations biological are due to either genetic loading or due to change in neurotransmitters in brain mostly serotonin medication that given to u is nexito 10 mg it is appropiate to ur symptoms and u have to take it at least 6 to 9 mnths there is no major side effect of this drugs so no need to worry if u feel panic like attacks in between than u have to take tab clonazepam 05 mg mouth disloving tab sos and u have quick relief within 5 min. tray to modify living stress free life avoid alcohol and smoking regular exercise and healthy food do meditation proper sleep etc will helpful to u hope u will get best thank u