Adverse effect

What Is an Adverse Effect?

In medical terms, an adverse effect is a harmful, undesired effect that can occur from medication, surgery, or other underlying medical condition. An adverse effect is also referred to as a side effect. An adverse effect can range from mild to severe. In some instances, an adverse effect can be life threatening.

What Causes an Adverse Effect?

There are several reasons a person may experience an adverse effect. The most common adverse effects are experienced due to drugs or medication. They typically occur when a person first takes the medication, when they stop taking it, or the dosage amount they are taking changes. An adverse effect can also occur when a medication is not taken correctly. An adverse effect can be experienced from both prescription and illicit drug use.

Complications due to surgery can also illicit an adverse effect. Non-surgical procedures (such as radiation treatment for cancer) can also produce an adverse effect. Long-term use of illegal drugs and addiction can also lead to serious adverse effects.

Symptoms of Adverse Effects

There are several symptoms associated with an adverse effect. Some less serious of these symptoms can include:

  • Constipation
  • Nausea
  • Vomiting
  • Diarrhea
  • Fever
  • Headache
  • Skin rash
  • Drowsiness
  • Dizziness

There are also more serious symptoms a person can experience from an adverse effect to a drug, prescription medication, or medical procedure. Some of these include:

  • Lung disease
  • Cancer
  • Stoke
  • Cardiovascular disease
  • Heart failure
  • Mental disorder
  • Kidney failure
  • HIV/AIDS

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