An asthma diary helps you keep track of how well you are managing
If you have symptoms or an
asthma attack, record the trigger (if possible), the
symptoms, and what kind of medicine you used for relief and how well it
worked. Also note if you had to contact your doctor or seek
emergency care. This can help you know your triggers and help your doctor monitor your treatment.
If your doctor recommends it, measure your peak expiratory flow (PEF) often, every morning and evening if possible, and
record it in your diary. It may be helpful to record your PEF using the same green, yellow,
and red zone system used in your
asthma action plan.
Here is an example of how to use an asthma diary if you are keeping track of peak flow.
Week of October 12
My personal best peak flow is 400 liters per second. My:
- Green zone is 320 to 400 liters per second (80%
to 100% of my personal best). To figure 80% of your personal best peak flow,
multiply your best flow (in this example, 400) by 0.80 (in this example, you
- Yellow zone is 200 to 319 liters per second (50% to less
than 80% of my personal best). To figure 50% of your personal best peak flow,
multiply your best flow (in this example, 400) by 0.50 (in this example, you
- Red zone is less than 200 liters per second (less than
50% of my best).
My current long-term (controller) medicine is fluticasone.
Example of an asthma diary
| Date ||
AM/PM PEF || Trigger || Symptoms || Quick-relief
medicine and response || Red zone visit
| Monday || |
| || || || |
|Tuesday || || || |
|Swimming ||Wheezing || |
Click here for a
blank asthma diary template (What is a PDF document?).
Health Tools help you make wise health decisions or take action to improve your health.
Actionsets are designed to help people take an active role in managing a health condition.
- Asthma: Taking Charge of Your Asthma
- Asthma: Using an Asthma Action Plan
Asthma Action Plan
Asthma in Children
Asthma in Teens and Adults
Asthma: Taking Charge of Your Asthma
Asthma: Using an Asthma Action Plan