If they are just doing it in the office ... I think the whole thing takes about an hour or so.
If they suspect absence, I am sure that they will a strobe test or maybe a hyperventilation test.
My child has had several eegs. In the event they tell you the eeg is normal and not absense, know that it does not rule out seizures. When it comes to absense seizures, those and complex partial seizures are often confused. They look very different on an eeg though.
Complex partials are often times not seen on eegs and require multiple eegs to pick them up.
A cp seizure can look very simular to an absense in that they both involve staring. CPs are typically longer though and you see more confusion and sometimes motor issues as well as odd behaviors such as chewing, fumbling with fingers and so on.
The Content on this Site is presented in a summary fashion, and is intended to be used for educational and entertainment purposes only. It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease; or a recommendation for a specific test, doctor, care provider, procedure, treatment plan, product, or course of action. MedHelp is not a medical or healthcare provider and your use of this Site does not create a doctor / patient relationship. We disclaim all responsibility for the professional qualifications and licensing of, and services provided by, any physician or other health providers posting on or otherwise referred to on this Site and/or any Third Party Site. Never disregard the medical advice of your physician or health professional, or delay in seeking such advice, because of something you read on this Site. We offer this Site AS IS and without any warranties. By using this Site you agree to the following Terms and Conditions. If you think you may have a medical emergency, call your physician or 911 immediately.