🚨 MUMPS IN CHILDREN: SEEMINGLY BENIGN, UNPREDICTABLY COMPLICATED!

"It's just a swollen cheek that will go away on its own in a few days!" – This subjective mindset held by many parents is the shortest path to unpredictable and dangerous complications in children. Behind what appears to be a "benign" swelling lies the risk of an outbreak and numerous long-term health hazards if the child is not properly cared for. 

👩🏻‍⚕️ Let's join Dr. Tran Thi Tu Hang (Specialist Level 1) – Pediatrics Department, CarePlus International Clinics – to learn about Mumps in children in detail, equipping parents with a solid "shield" of knowledge to help their children overcome the illness safely and smoothly! 

1️⃣ MUMPS AND ITS CLINICAL COURSE 

Mumps is a contagious viral infection caused by a virus belonging to the Paramyxovirus family. The disease commonly presents as swelling of the parotid glands (parotitis) or other salivary glands. 

▶️ CLINICAL COURSE: 

• Incubation Period: Usually 16–18 days after exposure to the virus (ranging from 12–25 days). 

• Contagious Period: Patients are most infectious from 2 days before the onset of parotitis to 5 days after, which is the crucial window for isolation. 

• Mumps can still occur in fully vaccinated individuals; however, the risk of contracting the infection and developing severe complications is significantly lower. 

2️⃣ SYMPTOMS OF MUMPS 

▶️ Prodromal Phase  

🔺 A few days before the onset of parotitis, patients may experience: 

• Low-grade fever lasting 3–4 days. 

• Myalgia (muscle pain). 

• Anorexia (loss of appetite). 

• Fatigue / Malaise. 

• Headache. 

🔺 Parotitis

▪️ Mumps typically causes: 

• Pain, tenderness, and swelling in one or both parotid glands. 

• When parotid swelling occurs, the angle of the jaw becomes obscured, and the mandible is often difficult to palpate. 

▪️ Characteristics of parotid swelling: 

• Can be unilateral or bilateral. 

• Swelling may begin on one side before the other. 

• Approximately 25% of patients present with unilateral swelling only. 

• Sublingual and submandibular salivary glands may also swell, though less frequently. 

▪️ Average Duration: 

• Parotitis usually lasts about 5 days. 

• Most patients recover in about 10 days. 

• The majority of mumps patients recover completely within 2 weeks. 

🔔 Note: Mumps virus infection may also present purely with respiratory symptoms or non-specific symptoms, or even remain entirely asymptomatic. 

3️⃣ COMPLICATIONS 

🔺 Common Complications 

• Orchitis (primarily in postpubertal males): 

• Occurs in approximately 30% of unvaccinated postpubertal males with mumps. 

• Occurs in approximately 6% of vaccinated postpubertal males with mumps. 

• Among patients with mumps orchitis, 60–83% experience unilateral involvement. 

• Mumps orchitis has not been proven to cause absolute infertility, but it can lead to testicular atrophy and reduced fertility. 

• Oophoritis (ovarian inflammation). 

• Mastitis in adolescent or adult females. 

• Meningitis. 

• Pancreatitis. 

• Hearing impairment or hearing loss. 

🔺 Other Severe Complications (Rare) 

• Encephalitis 

• Nephritis 

• Myocarditis 

• Paralysis 

• Seizures 

• Cranial nerve palsies 

• Hydrocephalus 

These complications can occur even in the absence of parotitis and are generally less common in vaccinated individuals. 

4. WHAT TO DO WHEN MUMPS IS SUSPECTED? 

• Seek Medical Examination at Reputable Healthcare Facilities: At the first signs of swelling or pain around the parotid region, children should be taken to a medical facility immediately for evaluation, diagnosis, and timely management. 

• Isolate to Prevent Spread: Children should stay home from school and avoid contact with others for at least 5 days from the onset of jaw area swelling. 

• Supportive Care: Ensure the child gets adequate rest, drinks plenty of fluids, and consumes bland, soft, and cool foods (such as porridge, soup, or milk) to minimize pain during chewing and swallowing. Limit sour, spicy, and hot foods, as they stimulate saliva production, worsening the pain. 

• Medication & Home Remedies: Use medications strictly as directed by healthcare professionals. Do not apply folk remedies such as herbal leaves, lime paste, betel leaves, ink, garlic, ginger, gac seeds, or honey to the swollen area. These traditional methods can be dangerous, causing skin burns or leading to secondary bacterial infections, making the child's condition worse instead of better. 

• Monitor for Red Flags: Parents must closely monitor the child for signs of complications, including persistent high fever, severe headache, frequent vomiting, neck stiffness, lethargy, somnolence, seizures, or testicular pain/swelling in boys, to seek urgent medical attention. 

💉 VACCINATION RECOMMENDATIONS 

Receiving 2 doses of the combination Measles-Mumps-Rubella (MMR) vaccine is approximately 86% effective in preventing mumps. Full vaccination remains the single most effective measure to lower infection risk and minimize severe complications associated with mumps. 

🛡️ Prevention is always better than cure. Proactively check your family's immunization records to ensure your child has received the full doses of the MMR vaccine. If you suspect your child has mumps, avoid self-treating at home—take them to a trusted medical facility for proper evaluation and professional guidance.