Hi and thanks for the query,
It is not unusual to have small little amount of blood in some children with flu
. However, its a concern when the amount of blood is excessive, or persists after the flu symptoms have passed. A clinical evaluation might be necessary to know if the child is bleeding elsewhere, or only at the level of the nostrils. Some other associated conditions like allergic rhinitis
and nasal polyps could also cause bleeding. It is actually rare in this case to talk of a platelet deficiency
or clotting disorder
My suggestion is appropriately managing the flu. Remember excessive dryness or use of certain local anti histaminic drugs to control the flu could irritate the very fragile nasal mucosa and cause some bleeding.
I suggest you stay cal for a few days and observe. In case of persistence or an increase in the intensity of bleeding, you might need to consult your primary care
Thanks and best regards,