This woman’s breath was noisiest when she inhaled — a type of wheeze known as stridor. This is an important observation, because the causes of stridor are different from other types of wheezing.

Again, voice changes and stridor should alert you to suspect something other than asthma. Lower-airway conditions: Many lower-airway problems can cause wheeze and cough.

Change in the voice (stridor) A noticeable change in your voice, such as hoarseness or stridor (a high-pitched wheezing sound), can be an indicator of lung cancer.

If the child can remain calm and keep their breathing under control, observation and supportive care during viral symptoms are all that is needed. But a sound called stridor is concerning.