That is just one example of why it is important for not only the healthcare provider, but for the patient to be able to recognize the differences between the two terms, as the expressions are commonly used wrongly. Accessed February February 22, Adverse Events An adverse event is an undesired occurrence that results from taking a medication correctly.
Side Effects A side effect is an undesired effect that occurs when the medication is administered regardless of the dose. Conclusion Adverse events are different from side effects and are never desired. Related Content: Retail. Adverse reactions can range from headaches and upset stomach to more serious reactions such as liver or kidney injury.
Some adverse reactions can be predicted, but some adverse reactions occur unexpectedly once many people take the medicine eg, severe allergy. Most people take medicines without suffering any serious adverse reactions.
Find a medicine data sheet or consumer medicine information. If an adverse reaction affects 1 person in every 10, people taking it, then 9, people out of 10, are not expected to have that adverse reaction. For example, research may have shown that a headache occurs in 1 in every 10 patients who use the drug according to the instructions. Heart palpitations may occur in 1 in every patients. It is important to check the PIL on getting new drugs, to find out what effects may occur and how likely these are.
The PIL will also advise on whether an effect is classed as an emergency or not. In the U. It offers an online source for patients to check for details of their medications. Side effects may occur as a result of a vaccine.
The effects will depend on the type of vaccine. The Centers for Disease Control and Prevention CDC estimate that this occurs in 1 in every 1 million vaccines and that the reaction usually appears within a few minutes to a few hours after the vaccination.
The CDC suggest that if a person feels faint after having a vaccination, they should lie down and rest for 15 minutes. Some parents worry about long-term adverse effects of some vaccines, even if these have not been fully proven by research.
However, serious and fatal diseases can result from not having a vaccination. Also, the fewer people have the vaccination, for example, against measles , the greater the threat to public health and the chance of an epidemic. In an epidemic, those who have not been vaccinated will be most at risk.
It is important for parents to weigh up the pros and cons of vaccinating or not vaccinating their children. Some cancer treatments, such as chemotherapy radiotherapy , or a combination, aim to destroy a tumor or reduce its size. The treatment can cause fatigue , nausea, vomiting, hair loss , mouth sores, and a lower blood cell count.
These are adverse effects. Radiation therapy kills unwanted cells, but it can also damage healthy cells, so adverse effects are common. How severe they are and how long they last will depend on which part of the body is targeted, the radiation dose, and how quickly the damaged cells can recover. Most people link chemotherapy with uncomfortable side effects, but the management of adverse effects has improved considerably in the last 20 years. Possible side effects include , but are not limited to:.
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