Hi, Thanks for writing in. It is important to take your husband to the ER and then get investigated in detail for the possibility of a seizure like episode. The feeling dizziness and throwing up clear mucus saliva is more likely to be a seizure attack. This usually happens when there is an outburst of electrical activity in the brain. Seizure can happen due to many reasons and this needs to be investigated by doing an electroencephalogram and a brain scan such as Ct scan or MRI scan. It is to be conformed as to what led to the cause of the seizure like episode. There are cases where a structural abnormality can trigger a seizure while in some others a seizure can be caused by abnormal brain activity. In some patients the cause is unknown. Once he is seen at an epilepsy clinic then the he will be prescribed medications to be taken for a duration of months to years after confirming his epilepsy. Please do not allow him to do activities like driving, swimming or working with fire and heavy machinery as these require a high degree of alertness and he might have another attack of seizure and that can put him and those around in danger.