Substrate is very often a big debate in keeping tortoises. I have Russian tortoises, I try to mimic their natural habitat as closely as possible.Since they are an arid species, I use a 50/50 mixture of playsand and topsoil deep enough for the tortoise to burrow.ubstrate is very often a big debate in keeping tortoises. I have Russian tortoises, I try to mimic their natural habitat as closely as possible.
There are four major types of headache: vascular, muscle contraction (tension), traction, and inflammatory. The most common type of vascular headache is a migraine. Migraine headaches are usually characterized by severe pain on one or both sides of the head, nasuea, and, at times, disturbed vision. Women are more likely than men to have migraine headaches.
Vascular dementia, also known as multi-infarct dementia (MID) and vascular cognitive impairment (VCI) , is dementia caused by problems in the supply of blood to the brain, typically by a series of minor strokes. Vascular dementia is the second-most-common form of dementia after Alzheimer's disease (AD) in older adults.