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Profile picture of Karlijn van Halewijn

K.F. (Karlijn) van Halewijn


  • Department
  • General Practice
  • Focus area
  • Atopic disorders in children



Karlijn van Halewijn is a general practitioner in training and PhD student in the field of atopic disorders in children. She completed her medical degree in 2017 at the Erasmus University Medical Centre Rotterdam.

In 2016, she wrote her master thesis at the department of General Practice, based on an observational cohort study on the treatment of children with allergic rhinitis in primary care.

During her study, she did an elective internship at a General Practice in Grimsby, England.

In March 2017, she started her PhD and GP-traineeship at the department of General Practice at the Erasmus MC. Her PhDproject focuses on the effectiveness of different strengths of topical steroids in children with atopic dermatitis (AD) in general practice. The aim is to determine whether a potent topical CS is more effective than a mild topical CS in the treatment of children with a moderate flare-up of atopic dermatitis in primary care. The study will consist of a cohort of children with AD with a follow-up of one year in which a randomized controlled trial will be embedded. During her PhD-project, she will be enrolled at the Master of Science-program in Clinical Epidemiology at the Netherlands Institute for Health.

Field(s) of expertise

  • General practice
  • Atopic dermatitis

Education and career

Medical degree at the Erasmus University Medical Centre Rotterdam


van Halewijn KF, Bohnen AM, van den Berg PJ, et al Different potencies of topical corticosteroids for a better treatment strategy in children with atopic dermatitis (the Rotterdam Eczema study): protocol for an observational cohort study with an embedded randomised open-label controlled trial BMJ Open 2019;9:e027239. doi: 10.1136/bmjopen-2018-027239