What symptom is drug allergy?

summary

With the development of medical and health undertakings, the disease has an increasing trend, and its prevention should be highly valued by doctors and patients themselves. Drug allergy generally occurs after multiple exposure to the same drug. The first onset has a latent period, and the second onset can occur immediately. It is caused by abnormal immune response. Generally speaking, this kind of reaction is not good for human body. What symptom is drug allergy? Let's talk about it

What symptom is drug allergy?

Urticaria and angioedema type of drug eruption, this kind of drug eruption is more common. The rash is characterized by the occurrence of different sizes of wheal, lasting for a long time. Conscious pruritus can be accompanied by tingling and tenderness. It may be accompanied by local edema around the wind mass. Rash can appear as the only symptom, and also as a symptom of serum sickness like syndrome and anaphylactic shock.

Fixed erythema is the most common drug eruption, accounting for 22% - 44% of drug eruption. The common pathogenic drugs are sulfonamides (long-acting sulfonamides are the first), tetracyclines, antipyretic analgesics and sedatives. Edematous patches are round or oval with clear edges. In severe cases, there are one or more blisters or bullae on the patches. The number of erythema varied from one to several, and the distribution was asymmetric.

Can occur in any part, often occurs in the lip and genitalia and other skin mucosa junction, often caused by friction erosion. If relapse, usually still in the original attack, with the previous left pigment spots completely or partially overlap, and often than the previous expansion, increase. Local lesions may be accompanied by pruritus, and patients with extensive lesions may have different degrees of fever. After the erythema subsides, it often leaves purple brown pigment spots, which do not subside for many years, so it has diagnostic value. A small number of edematous erythema without purple, then subsided quickly, and may not leave traces. Individual cases may be accompanied by erythema multiforme like drug eruption, urticaria like drug eruption or measles like erythema.

matters needing attention

Discontinuation of all suspected pathogenic drugs is the first measure to be taken, and it is forbidden to continue to use drugs when there are signs of drug reaction. To give patients favorable conditions, avoid adverse factors, in order to smoothly through its self limited course, such as bed rest, diet rich in nutrition, maintain a suitable warm and cold environment, prevent secondary infection, etc.