Yawning is a natural reaction when the body feels tired, bored, or drowsy. However, if it is too frequent or excessive yawning, it could be a sign of serious disease or condition.
The reason people to yawn are not just a drowsy, but a mechanism to cooling down the brain. When you yawn, you bring outside air into your body and when the outside air is cooler than your body temperature, it cools down your brain. But if you yawn excessively, this may a signal of medical problems that needs to be evaluated by a doctor.
Excessive yawning may be a sign of sleep disorders, such as insomnia, sleep apnea and narcolepsy. This condition may hamper you get a good night’s sleep and cause fatigue during the day, making it difficult to concentrate.
The vagus nerve acting on blood vessels can stimulate excessive yawning. This is called a vasovagal reaction and may be an indicator that you have a heart problem. If you have hypothyroidism or electrolyte imbalances, you may also feel drowsy during waking hours, which could also trigger excessive yawning.
Aortic dissection is a tear in the wall of aorta, the main artery that carries blood out of the heart. This condition can be inherited or due to diseases like high blood pressure and coronary artery disease, both of which put a strain on the arterial wall.
According to Mayo Clinic, this condition can cause fatigue and shortness of breath, which may trigger excessive yawning. If you have excessive yawning accompanied by difficulty breathing, chest pain, irregular heartbeat, or other warning signs of heart attack, seek medical care as soon as possible.