A practical review starts with the week before the outbreak. Think about colds, stomach bugs, sinus symptoms, dental problems, sick contacts, or urinary symptoms. Then match those details against the first day of hives and each later flare. Photographs also help because welts often vanish before a clinic visit. Write down any fever, fatigue, or body aches as well. If swelling affects the lips or tongue, or if breathing becomes difficult, urgent care is essential.
