By monitoring symptoms and practicing self-management, people who have asthma can control their asthma symptoms. An important part of learning to control asthma is keeping a daily asthma diary. The asthma diary is used to:

  • Record daily peak expiratory flow (PEF) readings and asthma symptoms
  • Compare PEF readings and symptoms with asthma zones, and
  • Keep track of how often rescue medications are used

Recording this information will help you become aware of early signs of asthma episodes. Your doctor will also use this diary to evaluate how well your or your child's treatment plan is working.

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