Baby has a fever and his lips turn purple

It is very common for babies to have a fever. Many parents will find that their babies often have a fever. There is no need to be too nervous. Just pay attention to doing some physical cooling when they have a fever and their condition will improve. But if you find that their lips turn purple when they have a fever, you need to pay attention. This may not be caused by a simple fever. There are many diseases that can cause purple lips.

The degree of purple lips of people will change throughout the day. Aerobic exercise, drinking and oxygen inhalation will significantly improve the symptoms of purple lips (the color will turn red). However, the people in items 1, 2 and 3 listed below should do appropriate exercise every day and, if conditions permit, they can breathe oxygen appropriately.

Common people with purple lips (cyanosis):

1) Respiratory diseases such as asthma, cor pulmonale, emphysema, etc., cause dysfunction of oxygen intake tissues, resulting in low blood oxygen saturation. Blood with low oxygen saturation will appear purple (cyanosis) when viewed through the lips.

2) People with cardiovascular disease or potential cardiovascular crisis.

3) This is especially true for middle-aged and elderly people, especially those who lack exercise.

4) People who smoke heavily every day.

Winter is a killer for the elderly because blood vessels contract when they are cold. The rapid contraction of blood vessels due to cold causes instantaneous high pressure inside the blood vessels, which can easily lead to dangerous situations such as thrombosis and blood vessel rupture. It is more important for the elderly to keep warm in winter. Especially for the head, be sure to avoid rapid alternation between hot and cold, and keep warm. [2]

One of the reasons for purple lips (cyanosis): low oxygen content in the blood

If the purple lips are accompanied by related hypoxia symptoms, it can be confirmed that the purple lips are caused by low blood oxygen saturation. The higher the oxygen saturation in the blood (which can be understood as the amount of oxygen carried by a unit of blood, the higher the saturation, the more oxygen it carries) the higher the blood color will be (bright red), otherwise the blood will be maroon or even black. When the human body's blood oxygen saturation is low, the blood color will be purple, so the lips will look purple.

The second reason for purple lips (cyanosis): cold

In spring and winter, observe the color of your lips immediately after getting out of bed in the morning, and then wash your face with cold water, you will find that the color of your lips after washing will be purpler than before washing. In winter or when swimming, many people will also have purple lips. This is because in order to maintain the core body temperature, the body will first cause the peripheral blood vessels to contract, and at the same time the blood flow will also be reduced to prevent heat loss. The slower blood flow will cause the oxygen saturation in the peripheral blood vessels to decrease, so the color of the blood will turn purple, and the lips will turn purple.