Sheryl A. Van Nunen is an allergist based in Sydney, NSW, Australia. Her clinic focuses on problems that happen when the immune system reacts too strongly to something in the environment or in food. Allergy issues can be frightening, especially when symptoms come on quickly, so the goal is calm, clear help and practical next steps.
In many cases, people seek help for breathing problems and ongoing allergy symptoms. This can include allergic rhinitis (hay fever) and asthma that seems to flare around triggers like pollen. Grass allergy is also common, and it can affect sleep, energy, and day to day life.
Skin reactions are another big part of allergy care. Sheryl looks after conditions such as hives and rashes that can be linked to allergies. At times, there are more serious skin reactions, including erythema multiforme and conditions like Stevens-Johnson syndrome and DRESS syndrome. These need careful attention and fast action when they appear.
Food and bite-related reactions also come up, including anaphylaxis. Anaphylaxis can include exercise-related episodes, so exercise-induced anaphylaxis is part of the care pathway too. There is also Alpha-gal Syndrome (AGS), which is linked to reactions after coming into contact with certain triggers. Understanding what sets off symptoms helps people avoid repeat episodes and manage risk at home.
Some referrals relate to severe or unusual reactions, including scalded skin syndrome. At times, allergies can overlap with other skin issues, so a steady, step by step approach is important. There are also cases involving scabies, and the right diagnosis matters because treatment plans differ.
Sleepwalking, also called somnambulism, is listed among the conditions managed. It can be disruptive for families, and it’s usually treated by looking at the pattern of episodes and possible triggers.
Overall, Sheryl’s allergy practice covers a wide range of immune and skin-related problems, from everyday hay fever through to urgent reactions like anaphylaxis. Based in Sydney, she works with patients and carers to bring symptoms under control, reduce triggers, and make a clear plan for what to do if things flare again.
