Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Emergency care is appropriate for uncontrolled bleeding, fainting, confusion, breathing difficulty, blood in vomit or stool, a sudden severe headache, or significant trauma.
Contact a clinician promptly if bruises become much more frequent, appear with fever or significant illness, or are accompanied by nosebleeds, gum bleeding, blood in urine, unusually heavy menstrual bleeding, or prolonged bleeding from small cuts.
New weakness, marked fatigue, weight loss, or a change after starting a medicine also deserves assessment.
People taking anticoagulant or antiplatelet medicine should follow the urgent-care instructions provided by their prescriber.
Routine follow-up is useful for reviewing the pattern of bruising, checking for new bleeding, discussing emotional well-being, and limiting unnecessary tests.
The timing depends on symptom frequency and whether the evaluation is complete.
Every sign above is quoted from the sofidex article on Autoerythrocyte sensitivity. If you are not sure, err upward — it is always reasonable to be checked.