NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,861 terms related to cancer and medicine.

Browse the dictionary by selecting a letter of the alphabet or by entering a cancer-related word or phrase in the search box.

In medicine, symptoms that occur when a person quits smoking or stops using an addictive substance, such as drugs or alcohol. Common withdrawal symptoms after quitting smoking include nicotine cravings, anger, irritability, anxiety, depression, and weight gain. These symptoms usually get better over time.