There are three main types of volcano-composite or strato, shield and dome. Composite Volcanoes. Composite volcanoes, sometimes known as strato volcanoes, are steep sided cones formed from layers of ash and [lava] flows. The eruptions from these volcanoes may be a pyroclastic flow rather than a flow of lava.
A vagal episode or vasovagal response or vasovagal attack (also called neurocardiogenic syncope) is a malaise mediated by the vagus nerve. When it leads to fainting, also known as a syncope, it is called a vasovagal syncope, which is the most common type of fainting.
A temporary, self-limiting situation called vasovagal syncope (passing out from low blood pressure due to overstimulation of the vagus nerve) is often seen when a patient receives a noxious stimulus. This can be physical, like a broken bone, or emotional like a medical student seeing their first operation.