Warmer weather in the Carolinas signals a rise in early-season tree pollens, worsening allergies later this week.

The occasional sneeze or headache is no match for what’s commonly known as “cedar fever.” But it isn’t quite what it sounds like.

Central Texas is entering a transition period as cedar pollen levels decline, but other pollens such as oak, elm, and pecan will soon be released, causing allergy sufferers to experience similar ...