My husband woke up with these raised pale red welts spreading across his neck and arms. We are hours from urgent care right now. What can we do?

Hives are raised, itchy welts that can be pink, red, or pale in the center with more color around the edges. They often change shape, join together into larger patches, and seem to “move” from one spot to another over minutes to hours. One welt may fade while a new one appears nearby. They can show up on the neck, arms, chest, back, legs, or just about anywhere.

A classic clue is timing: they often appear suddenly, sometimes overnight or first thing in the morning. Another clue is that the skin surface is raised and swollen rather than dry, flaky, or blistered. If each individual spot lasts less than 24 hours in the exact same location, that leans more toward hives than many other rashes.

2. The first question: is he having trouble breathing?

This is the most important part. If he has any trouble breathing, wheezing, throat tightness, hoarseness, trouble swallowing, swelling of the lips or tongue, faintness, confusion, or repeated vomiting, do not treat this as a simple rash. Those can be signs of a severe allergic reaction, including anaphylaxis.

If any of those are happening, call emergency services now if that is available where you are. If he has a prescribed epinephrine auto-injector, use it right away exactly as directed, even if you are far from care. Severe reactions can worsen fast, sometimes in 5 to 30 minutes.

3. Signs that make this more likely to be hives and less likely to be something else