The FDA warned that some people develop severe itching, or pruritus, after stopping long-term use of the antihistamines cetirizine (Zyrtec) or levocetirizine (Xyzal). Prescribing information for the ...
Hives are itchy red or white bumps that often stem from an allergic reaction. Some rashes are contagious, but hives are not spread from person to person. Corticosteroids and biologics can treat both ...