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Last Updated: Jun 26, 2020
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Drug Eruptions - How To Administer Them?

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Dr. J RajeshwariDermatologist • 24 Years Exp.MBBS, MD - Dermatology, Venereology & Leprosy
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Drug eruptions are mild to severe skin conditions, where the skin shows some form of the drug-induced adverse reaction, which may be visible or not visible, but causes discomfort, pain, visible lesions and hives or rashes, etc. on the patient's body or some areas of the skin. This is caused when a drug is given, for some reason causes the side effect or extra reaction. Often drug reactions are not serious or fatal except some cases and can be controlled once the causative drug is withdrawn from the administration. 

Types of drug eruptions

The common drug eruption types are as follows:

Type 1- Urticaria, anaphylaxis, or angioedema which happens due to the mediation of IgE and protein such as insulin.

Type 2- Purpura and haemolysis induced by a cytotoxic reaction for the administration of sulfonamides, penicillin, rifampin and cephalosporins.

Type 3- due to the action of sulfonamides, salicylates, and chlorpromazine a complicated reaction develops resulting in serum sickness, vasculitis and urticaria.

Type 4- these reactions which are caused by the hypersensitivity of cells and come in a delay cause photoallergic reactions, contact dermatitis, or exanthematous reactions. They are the most common types of reactions and occur when the drug is applied topically. 

All of these types show how drugs can cause several different types of reactions. Though eruptions are visible on the skin, some discomforts are not visible, and then it takes time for diagnosis. However, diagnosis of the reason behind drug eruptions has to be done as soon as possible to avoid further serious types of reactions like anaphylaxis and angioedema.

Managing drug eruptions

Management of drug eruptions has to be tactful. Often drugs are taken by patients who have a lot of problems, or sickness, and are not fully fit. Moreover, they take not just one drug, but a bunch of drugs for several problems in the body. Therefore, to understand which drug caused the problem and discontinue that one is often a challenge.  However, it has been seen that discontinuing the affecting drug really helps to get the eruptions eliminated after some time. However, to stop a drug when it is most needed for a certain problem or cure and that too by diagnosing the exact drug takes some time and needs experimentation from the medical caregiver or doctor.

While the drug is still continued, treatment with antihistamines, epinephrine and corticosteroids is done to relieve the patient from the pain and discomfort. If antibiotics are given to the patient, they are stopped to see how the body reacts. To avoid an eruption sometimes premedication can be done to soothe the eruptions in case of patients with a drug eruption history.

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