Why do I feel dizzy and faint when I am upright?
This animation explains why we feel faint when we stand up or remain in an upright position for too long.
These events are made worse by certain conditions such as being in a warm, crowded, stuffy environment or when dehydrated or fatigued,
A fainting episode has no medical importance, but sometimes it results from a serious illness, condition, or disorder. Every case of fainting should be treated as a medical emergency until the cause is known and signs and symptoms have been treated.
Anybody who has recurring fainting episodes should see a doctor...Read More
Why do I feel dizzy and faint when I am upright?
This animation explains why we feel faint when we stand up or remain in an upright position for too long.
These events are made worse by certain conditions such as being in a warm, crowded, stuffy environment or when dehydrated or fatigued,
A fainting episode has no medical importance, but sometimes it results from a serious illness, condition, or disorder. Every case of fainting should be treated as a medical emergency until the cause is known and signs and symptoms have been treated.
Anybody who has recurring fainting episodes should see a doctor...Read More
What happens when I stand up?
- Blood supply to the brain and heart reduces
Feeling unwell / lightheaded
- Blood supply to the brain and heart reduces
- Bloody Supply reduces further in brain and heart
- Starting to feel mildly unwell, sweaty, lightheaded
Feeling sweaty, hot and more dizzy
- Blood supply to the brain and heart reduces
- Bloody Supply reduces further in brain and heart
- Starting to feel mildly unwell, sweaty, lightheaded
- Blood pools further into gut and legs
- Starting to feel more dizzy, pounding heart, hot, need to sit down
About to faint, darkening vision, very unwell
- Blood supply to the brain and heart reduces
- Bloody Supply reduces further in brain and heart
- Starting to feel mildly unwell, sweaty, lightheaded
- Blood pools further into gut and legs
- Starting to feel more dizzy, pounding heart, hot, need to sit down
- Blood supply to brain is critically reduced, and maximal pooling occurring in the legs and gut
- About to faint