What symptom is drug allergy?

summary

In fact, what patients fear most is drug allergy. In fact, hospitals are also very afraid. Drug allergy, also known as drug allergy, is an allergic reaction caused by drugs. It is a special type of adverse drug reactions. It is related to people's specific allergic constitution and only occurs in a few people. 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. What symptom is drug allergy? Let's talk about it

What symptom is drug allergy?

(1) 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.

(2) Drug eruption of fixed erythema (fixed eruption) is the most common kind 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.

(3) Scarlet fever like or measles like drug eruption occurs suddenly, or may be accompanied by shivering, fever (above 38 ℃), headache, general discomfort, etc. The rash begins with diffuse red spots or red spots and papules with the size of half a grain of rice to bean. It develops from the face, neck, trunk, upper limbs to lower limbs. It can spread all over the body in 24 hours, with symmetrical distribution. It is edema and bright red, and can fade when pressed. After the rash increased expansion, mutual fusion, can affect the whole skin, like scarlet fever.

matters needing attention

1. Before medication, first make a clear diagnosis, do not use a variety of drugs to siege before the condition is clear, thinking that there is always a drug that will produce effect, so it is easy to have unnecessary drug reactions. 2. The ingredients, performance, indications, contraindications, side effects and incompatibility of the drugs should be fully mastered, so as not to abuse, misuse and use more drugs. 3. Before medication, we should ask the patients whether they have a history of drug allergy, especially for those with allergic constitution. For those with drug allergic reaction, we should pay attention to the occurrence of cross sensitivity or multi-source sensitivity reaction.