The difference between roseola infantum and allergies

Children are very prone to skin diseases when they are young, and roseola infantum occurs in most children. This rash appears very quickly, and when it appears, it is generally more destructive and will appear all over the child's body. Children are also more prone to allergies when they are young due to their poor resistance. So what is the difference between roseola infantum and allergies?

1. Drug allergy is a relatively intense reaction of the human body to external drugs. When drug allergy occurs, patients often show various types of symptoms. Because some people have different sensitivities to drugs, it is mainly related to the patient's physical constitution. Now with the development of medical technology, more and more people are aware of such drug allergies. The occurrence of roseola infantum is closely related to the age of the child. Generally speaking, the patients are children around one year old.

2. Drug allergy can manifest differently in many cases, and it depends on the patient's sensitivity to the drug. Generally speaking, when allergies occur, there is often a certain incubation period. Therefore, if a patient takes an allergic medication, he or she will generally react after a period of time.

3. Drug allergy sometimes causes drug rash. Of course, there are other types of symptoms, such as urticaria, fixed erythema drug rash, and severe erythema drug rash. Therefore, when a patient develops a drug rash, it means that he or she is allergic to these drugs.

4. If it is roseola infantum, there will be symptoms of fever for a few days before the rash appears, and it will be a high fever, usually around 40 degrees. After the fever subsides, some red spots will appear, but they will obviously subside after about a week.

Summary: For children, the way to determine whether it is a drug allergy or roseola infantum depends mainly on whether the child has shown signs of allergy to such drugs before.