The effects of this can be similar to anger. The tension produced upsets the digestion, sleeping patterns and mood. It is useless to treat the bowel and take supplements if you are unwilling to face the cause of your frustration. If the cause is not one that you can turn your back on or tackle with real communication (no matter how scary that might be), then seek counselling for help in adapting to the circumstances before your health, the health of those around you and your relationships with people worsen.
People who have not suffered from this distressing emotion or have been on the receiving end of it often see it as a brief twinge of envy. It can be a great deal more serious than that. It can be a threat to physical and mental health, a common reason for the breakdown of relationships and even a cause of violence. It often comes from deep feelings of insecurity and low self-worth. If this emotion is affecting your life see your doctor and ask for referral to a psychologist for long-term counselling. Do not be ashamed or think this is a trivial reason to seek help. It is not a moral issue. A person would not choose to experience this emotion. It is not your fault but you do have a duty to yourself (your health and happiness are important too) and to those around you to learn how to cope with this.