VI: Diseases of the nervous system
G40-G47: Episodic and paroxysmal disorders
Episodic and paroxysmal disorders refer to a group of conditions that affect the nervous system, causing sudden, brief attacks of symptoms that come and go. These events or episodes are often unpredictable and can vary in frequency and severity. These disorders typically include conditions such as epilepsy, migraine, tension-type headache, trigeminal neuralgia, and sleep disorders like insomnia, sleep apnea, and narcolepsy, among others. The common characteristic of these conditions is the episodic and recurrent nature of symptoms. While the exact cause may differ among conditions, many are thought to involve certain changes in the brain or nervous system. It's also common for these disorders to show symptoms that affect the nervous system such as seizures, headaches, facial pain, and disturbances in normal sleep patterns. Disease progression is usually chronic, with symptoms that can affect the individual's daily life.
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The information provided on this page is for general educational purposes only. It is not intended for self-diagnosis and does not replace professional medical advice. Always consult your doctor or a qualified healthcare provider with any questions or concerns about your health.
If you see an ICD diagnosis code (e.g., on a medical report), be aware that doctors may also include additional indicators to express diagnostic certainty. Only a healthcare professional can interpret these codes accurately in the context of your individual case.
For a complete understanding of your condition and what the diagnosis means for you, please speak directly with your doctor.