Any of the usual symptoms associated with stress (nervousness, high blood pressure, more susceptible to colds); relaxation and a positive attitude are important.
Explanation:
Competitive stress as defined by a psychologist is an "Feeling of difference between the demands placed on a athlete by the people around the athlete and the athlete's reaction capability and and resource for getting those expectation."
Like any type of stress competitive stress has it's negative effects as well .An athlete might get nervous,might receive unnecessary pressure and even might loose confidence.
It can be managed by keeping a positive attitude ,relaxing oneself and by not putting to much stress on oneself.