It is referred as a feeling of fear, dread, and uneasiness.
It could cause a person to sweat, feel restless and tense causing increased heart rate.
It is quite normal reaction to stress.
It is said to be a psychological disorder.
Causes :
Difficult experiences in the childhood, adolescence or adulthood are very common triggers for anxiety problems.
Treatment:
Since it is a psychological human condition, anxiety is not completely curable sometimes.
But the feeling of being anxious is a temporary state that resolves when a stressor or trigger has passed.
Medication could be a short-term or long-term treatment option, depending on the severity of symptoms, other medical conditions, and individual circumstances.