Dr Abinaya

This is one of the most common questions I receive from parents of children with egg allergy, and the current evidence is considerably more reassuring than many families expect. The influenza vaccine is produced using an egg-based manufacturing process and contains trace amounts of egg protein (ovalbumin). For many years, egg allergy was considered a contraindication to influenza vaccination, but extensive clinical experience and evidence have established that this concern was overstated. The current recommendation, supported by major allergy and paediatric bodies, is that children with egg allergy, including those with a history of severe allergic reactions to egg, can receive influenza vaccine safely. For children with mild egg allergy, no special precautions beyond standard post-vaccination observation are required. For children with a history of severe egg-related anaphylaxis, a 30-minute observation period after vaccination is recommended as a precaution, and the vaccination should be given in a setting equipped to manage allergic reactions. The MMR vaccine is produced in a different manufacturing system and does not require special precautions for egg allergy  -  this distinction is worth knowing because the two vaccines are sometimes confused. If you are uncertain about your child's specific situation, a pre-vaccination allergy consultation clarifies the appropriate approach for their individual history.

Drug allergy in children is a frequently over-diagnosed condition. Studies consistently show that the large majority of children who carry an antibiotic allergy label, most often to penicillin or amoxicillin, do not have a true IgE-mediated drug allergy when formally evaluated. Many of these labels originate from a rash that occurred during a viral illness being treated with an antibiotic  -  the rash was viral, not drug-related, but the antibiotic was blamed because the timing coincided. This matters because a child carrying an inaccurate penicillin allergy label may receive less effective or broader-spectrum antibiotics for future infections for years, contributing to antibiotic resistance at a population level and sometimes to worse individual outcomes. Formal drug allergy evaluation begins with a detailed history of the original reaction  -  the specific drug, the exact nature of the rash or reaction, the timing, and what happened when the course was completed. A reaction that occurred only on the last dose, or that was urticarial and resolved fully, has a different clinical implication from a reaction involving mucosal involvement or systemic features. Where the history supports low to moderate risk, graded drug provocation challenge under medical supervision can establish definitively whether the allergy label is accurate. When it is not, the label can be safely removed and the child can receive first-line antibiotics in future.

The distinction between the controller and reliever inhaler is the most important thing I explain to every family of a child with asthma, because the confusion between the two is the single most common cause of poor asthma control. A reliever inhaler, typically a short-acting bronchodilator like salbutamol, relaxes the muscle around the airways within minutes of use. It provides fast relief of symptoms but it does not treat the underlying airway inflammation  -  the inflammation that makes the airways prone to narrowing remains completely unchanged. A controller inhaler, typically containing inhaled corticosteroid, works by reducing airway inflammation over time when taken daily even when the child has no symptoms. It has no immediate effect  -  the child will not feel any different thirty minutes after using it  -  but with consistent daily use over two to three weeks it reduces the frequency and severity of symptoms, reduces reliever use, and reduces the risk of serious asthma attacks. The pattern I see most often in poorly controlled asthma is a child who uses the reliever every other day, rarely uses the controller, and whose family concludes the controller 'doesn't work' because it provides no immediate relief. If your child needs their reliever inhaler more than twice a week, their asthma is not well controlled and the controller treatment needs review.

Yes, and this is one of the most common presentations I see in my Tamil Nadu practice. The key clinical distinction is the pattern. Colds are caused by viruses and resolve within seven to ten days. They are often accompanied by a low-grade fever, and the nasal discharge typically changes from clear to thick and coloured before resolving. Allergic rhinitis produces clear, watery nasal discharge that persists indefinitely without fever, is worst on waking in the morning, and is often accompanied by itchy, watery eyes and an itchy nose or palate. When a child has been 'having colds' for six weeks, three months, or half a year without resolution, the diagnosis is almost certainly not a cold. In Tamil Nadu, house dust mite is the dominant year-round allergen, and children sensitised to it have perennial symptoms  -  persistent across all seasons  -  that are worst in dust-rich environments such as the bedroom, the classroom, and upholstered furniture. A formal allergy evaluation including skin prick testing identifies the specific allergen and changes the treatment from generic cold management to targeted allergy care.