2024-01-04 22:19:00
There is a variation of tinnitus in which the person feels and hears the pulse in the ears. This is called pulsatile tinnitus (Getty)
Every day, the body does some pretty strange and unusual things. To find out their causes, below are some questions and answers that offer the scientific explanation of why they happen.
1. Why do fingers wrinkle in water?
This is caused by changes in fluids that occur between the tissues and the water in which the fingers are immersed. Evolution experts found evidence that this may have allowed humans to better grasp objects underwater. People with nerve injuries in their fingers or toes usually do not wrinkle their fingers in the same way.
2. Why do I sometimes feel a pulse in my ears?
It can be due to various reasons. Tinnitus is usually described as a ringing sound, but there is a variation in which the person feels and hears the pulse in the ears. This is called pulsatile tinnitus. Also, an increase in blood pressure or a blockage in the ear canal can cause a person to hear a pulse. Another cause may be an abnormality in the arteries near the ears. This is a reason to consult with your healthcare team.
Sensitivity to cold translates into shivering of the teeth, why? Science has the answer Photo: Christin Klose/dpa
3. Why do we shiver when it’s cold?
Shivering when it’s cold is a way of making your muscles shiver to generate heat. The body always tries to keep the temperature as close to 37°C (98.6°F) as possible.
4. Why do some people sneeze when they look at the sun?
This is known as the photic sneeze reflex. The theoretical explanation behind this reaction is as follows: the optic nerve, which detects a change in light, is located near the trigeminal nerve, which controls sneezing. A typical sneeze is caused by irritation in the nose, which activates the trigeminal nerve and triggers that reaction. When leaving a dark room into a brightly lit place, the pupils constrict. This rapid reflex begins in the optic nerve and can give the sensation of irritation in the nose, which causes sneezing. Not all people have this reaction, and it is not clear why some people do and others do not.
Stitches in the side of the body, very common among beginner runners, are caused by irritation of the diaphragm, a muscle that separates the lung cavity and the abdominal cavity (Getty)
5. Why do I feel a twinge in my side when I run?
Stitches in the side of the body are caused by irritation of the diaphragm, a muscle that separates the lung and abdominal cavities. New runners or those increasing their pace or distance are more likely to feel twinges in their side. Sometimes the cause is breathing too quickly or eating inappropriately before running. If you feel a twinge in your side, slow down, stretch your core muscles, and focus on breathing slowly and regularly.
6. Why does the eyelid suddenly begin to twitch?
Tightening of the eyelid is called blepharospasm. The exact cause is unknown, but it is usually attributed to fatigue, caffeine consumption, and stress. It is recommended to stretch the contracting muscle by gently pulling it with your fingertips in the area and rest well. Generally, the contraction goes away on its own. If this reaction lasts more than a couple of days or if you have difficulty opening your eyelid, you will need to go to the office to be seen by a healthcare professional.
* Dr. Amy Rantala is an Orthopedics and Sports Medicine specialist at the Eau Claire, Wisconsin, Mayo Clinic Health System.
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