Two case studies provide evidence that antihistamines may provide relief for people living with symptoms of long COVID-19 that impair daily functioning.

Many people with eczema also experience chronic itching that antihistamines don't help. A discovery of why may lead to new more effective treatments.

Steroids and antihistamines are go-to treatments for poison ivy, but they're only partially effective. New research identifies promising drug targets.

"We do know that these medicines can make kids sleepy and some kids quite hyper."