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{{Infobox medical condition
| name = Cinchonism
| synonyms = Quinine toxicity
}}

'''Cinchonism''' is a pathological condition caused by an overdose of [[quinine]] or its natural source, [[cinchona bark]]. Quinine, a medication primarily used to treat [[malaria]], can cause a range of symptoms when taken in excessive amounts or by individuals with sensitivity to the compound. The condition is historically significant due to quinine's extensive use in the treatment of malaria.

==Symptoms==
Cinchonism can present a variety of symptoms, which are often dose-dependent. Common symptoms include:
* [[Tinnitus]] (ringing in the ears)
* [[Headache]]s
* [[Nausea]]
* [[Dizziness]]
* Blurred vision
* [[Hearing loss]]

In severe cases, symptoms can escalate to include:
* [[Arrhythmia]]s (irregular heartbeats)
* [[Hypotension]] (low blood pressure)
* [[Confusion]]
* [[Seizure]]s

==Causes==
Cinchonism is primarily caused by excessive consumption of quinine, either through medications or, in rare cases, from beverages containing tonic water. The sensitivity to quinine can vary significantly between individuals, making some people more susceptible to cinchonism than others.

==Diagnosis==
Diagnosis of cinchonism is typically based on the presence of characteristic symptoms following the ingestion of quinine. Medical history and a physical examination are crucial for diagnosis. In some cases, blood tests may be conducted to measure the levels of quinine in the bloodstream.

==Treatment==
The primary treatment for cinchonism involves discontinuation of quinine. Symptomatic treatment may be necessary for managing the symptoms. This can include:
* Use of [[antiemetic]]s for nausea
* Pain relievers for headaches
* Medications to manage heart rate and blood pressure

In cases of severe toxicity, hospitalization may be required to provide supportive care and monitoring.

==Prevention==
Prevention of cinchonism is primarily through the judicious use of quinine, adhering to prescribed doses, and monitoring for any adverse effects during treatment. Individuals who are particularly sensitive to quinine should avoid it and consider alternative treatments for conditions like malaria.

==Historical Context==
Quinine has been used since the 17th century for the treatment of malaria, derived from the bark of the cinchona tree. The potential for toxicity was recognized early in its use, leading to the identification and description of cinchonism.

==See Also==
* [[Malaria]]
* [[Quinine]]
* [[Tonic water]]

[[Category:Drug safety]]
[[Category:Toxic effects of substances chiefly nonmedicinal as to source]]
[[Category:Medical conditions related to malaria]]

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Cinchonism - Revision history

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