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Yan Xin Liang
Pediatrics
About me
Graduated from Nanhua University, engaged in pediatric work for over 10 years, and have further studied at Hunan Children's Hospital, Xiangya Hospital, and Beijing Children's Hospital.
Proficient in diseases
Diagnosis and treatment of common diseases in pediatric internal medicine, especially skilled in the diagnosis and treatment of pediatric respiratory system and neurological diseases, such as pediatric convulsions, epilepsy, asthma, and lung infections...
Voices
Will babies drinking soy milk lead to precocious puberty?
Soy milk is a rather nutritious food, containing rich plant protein and phospholipids, as well as vitamins B1, B2, and folic acid. Additionally, it contains iron, calcium, minerals, and other nutrients, making it an exceptional source of nutrition for children. It is generally fine for babies to drink soy milk in moderation as it can supplement various nutrients in the body. However, it should not be consumed in excess, as some studies have indicated that excessive consumption of soy milk could lead to pseudoprecocious puberty, which refers to early breast development. But, this is only pseudoprecocity, so there is no need for excessive worry. At the same time, attention should also be paid to other aspects of the diet, such as not consuming too many beverages and avoiding out-of-season vegetables.
How is phenylketonuria diagnosed?
How is phenylketonuria diagnosed? Firstly, we start with screening, which is usually done when the newborn is 3 to 7 days old by heel prick to collect peripheral blood, which is then dropped onto specialized filter paper for the determination of phenylalanine concentration. If the concentration of phenylalanine is above the cutoff value, further determination of phenylalanine concentration is conducted. The normal concentration is less than 120 umol/L. If the concentration of phenylalanine is greater than 1200 umol/L, it suggests severe phenylketonuria. Moderate levels are above 360 umol/L, and mild levels are above 120 umol/L but less than 360 umol/L. Furthermore, diagnosis can be confirmed through DNA analysis, currently available tests include screening for mutations in the phenylalanine hydroxylase gene.
What should I do if the baby is lactose intolerant?
If the baby is lactose intolerant and does not have frequent bowel movements and it does not affect their growth and development, then no special treatment is needed. If there is frequent diarrhea and slow weight gain, then an adjustment in diet is necessary. If there is significant acute diarrhea accompanied by dehydration, we should initially rehydrate the infant either intravenously or orally to correct the dehydration. At the same time, you can start with some lactose-free formula and, after the diarrhea stops, gradually increase the amount of breast milk or other formulas based on the child's condition. Regardless of whatever food substitute is used, the overall principle is to not decrease the nutritional needs of the child. As solid foods are introduced and breast milk or cow's milk is decreased, diarrhea will gradually cease. If diarrhea does not subside, oral lactase enzyme preparations can also be provided to supplement lactase enzyme therapy.
How to treat children's colds, coughs, and phlegm
When children catch a cold and cough with phlegm, the first consideration should be whether there is bronchitis. If the cough is severe, expectorant and cough suppressing medications can be administered orally, such as traditional Chinese medicine or Western medicine, for example, ambroxol. Additionally, bronchitis might be accompanied by a bacterial infection, in which case anti-inflammatory drugs like cephalosporins or penicillin can be prescribed. Nebulizer treatment can also be used, which helps in thinning the mucus and suppressing cough. Furthermore, it might be necessary to conduct a routine blood test to assess the child's condition.
Is hand, foot and mouth disease itchy?
Hand, foot and mouth disease is an infectious disease caused by enteroviruses. There are more than 20 types of enteroviruses that cause hand, foot and mouth disease, among which Coxsackievirus A16 and Enterovirus 71 are the most common. Its main clinical symptoms include mouth pain, decreased appetite, mild fever, and the appearance of small vesicles or small ulcers on the hands, feet, mouth, and other areas. Most infected children can recover in about a week. The rash of hand, foot and mouth disease typically appears on the hands, feet, buttocks, arms, and legs as maculopapular rash, which can later turn into vesicles. These vesicles are surrounded by an inflammatory red halo and contain relatively little fluid. The rash is not itchy. Thus, the rash of hand, foot and mouth disease is unlike other allergic rashes; it does not cause itching or discomfort.
Symptoms of tuberculosis in children
Tuberculosis is a chronic infectious disease caused by Mycobacterium tuberculosis. It can affect various organs throughout the body, but pulmonary tuberculosis is the most common. Initially, symptoms typically include some signs of tuberculosis toxicity, such as prolonged low-grade fever accompanied by coughing. Sometimes the coughing is not severe and may be mild, but in some cases, severe coughing can lead to hemoptysis and other conditions. Night sweats are also common, generally presenting with afternoon low-grade fever and night sweating, along with general fatigue, loss of appetite, difficulty eating, and weight loss.
Baby eczema treatment methods
Eczema in babies is a common problem, generally caused by allergies. To address allergies, it's important to identify the cause. Common triggers in babies include food, with cow's milk allergies being frequent, as well as contact with certain substances. Some babies who often spit up milk can develop eczema around the lips. If the allergen is identified, it is best to avoid contact with it. Topical medications can also be used, with commonly prescribed treatments including Desonide ointment (use medications under the guidance of a doctor). Desonide is a steroid medication. If you prefer to avoid steroids, other options like Dandiphen ointment (use medications under the guidance of a doctor) are available, though they might not be as effective. As the child grows older, the eczema will gradually disappear, so parents need not worry overly.
Clinical symptoms of phenylketonuria
The clinical symptoms of phenylketonuria generally include normal appearance at birth, with symptoms usually appearing between three to six months, and becoming more pronounced by the age of one. The most noticeable initial symptoms involve the nervous system; delayed intellectual development is prominent, with intelligence often below normal, along with behavioral abnormalities such as hyperactivity, depression, restlessness, and withdrawal. There could be minor epileptic seizures, and in some cases, increased muscle tone or exaggerated tendon reflexes. Regarding the skin, several months after birth, due to insufficient melanin synthesis, the child’s hair changes from black to yellow, the skin appears pale, and eczema is also relatively common. Additionally, the urine and sweat contain higher levels of phenylacetic acid, which can result in a distinctive mouse-like urine odor.
How many days does a toddler's fever rash last?
Roseola infantum is a viral infectious disease, generally characterized by a fever that lasts about three days, followed by a rash. The rash typically appears after the fever subsides and gradually emerges, starting from the head and neck and spreading to the trunk and limbs, potentially affecting the entire body. The rash usually consists of congestive red maculopapular lesions, which may slowly fade after two to three days.
Symptoms of hand, foot, and mouth disease
Hand, foot, and mouth disease is a disease caused by enterovirus that results in sores on the hands, feet, mouth, and buttocks, accompanied by symptoms such as fever. It is generally caused by Enterovirus 71 or Coxsackievirus A16. Most cases of hand, foot, and mouth disease are typical and may involve fever, low fever, or no fever at all. However, common symptoms include sores in the mouth and on the pharynx, as well as on the hands, feet, and buttocks. The general course of the disease lasts five to seven days, but severe cases may last longer. Severe cases may present with symptoms such as listlessness, irritability, vomiting, and trembling limbs. More serious conditions can include microcirculatory disorders, difficulty breathing, shortness of breath, neurogenic edema, and bleeding, among others.