Pernicious anemia is a rare disorder that occurs when a person has a vitamin B12 deficiency and the body does not produce enough red blood cells. Without treatment, the condition can be fatal.
Common symptoms of pernicious anemia include fatigue, dizziness, clumsiness, pale skin, and tingling and numbness of the extremities. Less commonly, hives is a symptom of the condition.
Hives and hives-like symptoms can be a sign that there is a bacterial infection in the body. Urinary tract infections (UTIs) and strep throat are two infections known to trigger hives.
Tooth decay is another well-known culprit, although hives isn’t always caused by bacterial infections. Viral infections like Hepatitis B, influenza, and the common cold can produce urticaria.