The face is red and purple due to increased heart rate and blood pressure caused by strenuous activity, emotional stress and excitement, and expansion and congestion of the facial skin. Newborns and infants often do not have typical coughing spasms, but show critical symptoms such as choking episodes, spasms, and bruising of the face and lips. The red-purple face is often caused by temporary vasodilation of the face, which can be caused by a variety of factors such as emotional excitement, vegetative nervous disorders, endocrine influences or direct action of vasoactive substances on the dermal blood vessels of the face. Related tests for facial reddish-purple: Facial skin is dilated and congested, and facial reddish-purple appears. It can be seen in coughing spasms lasting 2-4 weeks or longer. The cough is paroxysmal, spasmodic and violent, and is followed by a cockle-like inspiratory sound. The child’s expression is painful, his face is red and purple, he has a mixture of tears and snot, his tongue is stretched outward, his tongue is broken underneath, and finally he coughs up a lot of mucous sputum and spits out the stomach contents, and his cough is suspended. The spasmodic cough is light day and heavy night, and is triggered by emotional stress and eating. Newborns and infants often do not have a typical spasmodic cough, but show critical symptoms such as choking episodes, spasms, and blue lips. Facial color diagnosis: Facial color diagnosis is to infer the physiological and pathological changes of a person by observing the changes in facial color. The patient sits up straight and gives the doctor the opportunity to observe the color of the face. A normal person’s face is normal in color, slightly yellowish with redness and slightly shiny. Do not put on makeup before going for the examination. Routine blood test: Routine blood test is the most general and basic blood test. Routine blood tests are usually taken from peripheral blood for examination, such as blood from the fingertip and earlobe area. After passing through the blood cell analysis instrument, the computer reports the results and this item has become a practice to examine patients. Blood consists of two major parts, liquid and tangible cells, and routine blood tests are performed on the cellular part of the blood. Blood has three different functions of cells – red blood cells (commonly known as red blood cells), white blood cells (commonly known as white blood cells), and platelets. The disease is determined by observing the change in number and morphological distribution. It is one of the common auxiliary examinations used by doctors to diagnose the condition. Head and face palpation: Head and face palpation mainly involves palpation of the cranium, cheeks, facial muscles and the shape of the ear auricles.