Difficulty breathing can occur for various reasons but usually it occurs because of a problem in the lungs.
Most cases of difficulty breathing are caused by respiratory tract infections and are short-lived and resolve completely.
Signs to look out for include:
grunting noise when your child breathes
flaring of the nostrils as your child breathes
the trachea pulling in as your child breathes (look at the soft spot above the breast-bone)
the ribs looking more prominent as your child breathes
the abdomen (tummy) pushing out as your child breathes out
lips looking blue or dusky in color
wheeze (a whistling noise as your child breathes out)
stridor (a whistling noise as your child breathes in)
breathless or sweating with feeding in a baby
When there is difficulty breathing, the pulse and the respiratory rate (breaths per minute) will be higher than normal. To read about normal values for age for pulse and breathing rates, click here.