What should I do if my 4-month-old baby has recurring fever?

Generally speaking, fever usually refers to elevated body temperature. For a 4-month-old infant with recurrent fever, treatment depends on the underlying cause, which may include common conditions such as colds, otitis media (middle ear infection), bronchitis, mycoplasma pneumonia, and hand, foot, and mouth disease. Specific analyses are as follows:

1. Cold

Since an infant's thermoregulatory system is relatively immature, external environmental factors—such as excessively high or low room temperatures or improper clothing—may lead to increased body temperature, accompanied by symptoms like runny nose and sneezing. It is recommended to dress the baby appropriately according to ambient temperature, encourage drinking warm water, and, when necessary, take medications such as pediatric fever-reducing granules, pediatric cold granules, or pediatric oral liquid for rapid clearance of heat, following medical advice to relieve discomfort caused by colds.

2. Otitis Media (Middle Ear Infection)

After bacterial or viral infection of the middle ear, pus may accumulate in the ear tissues, leading to recurrent fever due to inflammatory stimulation. Symptoms may also include ear fullness and ear pain. It is recommended to follow medical advice and take antibiotics such as roxithromycin tablets, cefalexin dry suspension, or clindamycin hydrochloride tablets to control inflammation and improve symptoms.

3. Bronchitis

If bronchitis is present and the causative pathogens have not been completely eliminated, or if the condition is severe, it can result in persistent fever in infants, along with coughing and wheezing. It is advisable to use penicillin-class antibiotics under a doctor’s guidance, such as mecloxacillin sodium for injection, piperacillin sodium for injection, or oxacillin sodium for injection, to inhibit pathogen replication and help control the illness.

4. Mycoplasma Pneumonia

After infection of the lungs by mycoplasma, prematurely stopping medication or altering dosage without medical supervision during treatment may lead to disease progression, causing frequent high fever, headache, and sore throat. Macrolide antibiotics should be used under a doctor’s recommendation, such as azithromycin dispersible tablets, roxithromycin dispersible tablets, or clarithromycin capsules, to control mycoplasma infection and improve clinical outcomes.

5. Hand, Foot, and Mouth Disease

Infection with enterovirus type 71 may trigger an immune response, resulting in fever along with oral, hand, and foot rashes or blisters. It is recommended to take antiviral medications such as acyclovir tablets, ganciclovir tablets, or famciclovir tablets under medical supervision to control viral replication and prevent disease progression.

If a 4-month-old infant experiences prolonged episodes of recurrent fever, prompt hospital evaluation is necessary. Identifying the underlying cause enables targeted treatment, which is crucial for effective disease management.