Mimicking rashes: Use of moulage technique in undergraduate assessment at the aga khan university, Karachi.

Background: The use of simulated patients in student assessment is supported by the Best Evidence Medical Education and U.S. Agency for Healthcare Research and Quality, and it provides a safe and effective alternative to real patients in many situations. To assess the validity and feasibility of moulage technique-where a cosmetically constructed rash is used on simulated patients-two dermatologic rashes were developed using moulage simulation on standardized patients at Aga Khan University Hospital for 3rd year medical summative Objective Structured Clinical Examination (OSCE).

Methods: Checklists for cases that focused on history taking of a skin rash were developed. These also included a description and identification of lesions, differential diagnosis, and basic management. Cases were first reviewed and approved by the Educational Committee and a dermatologist content expert. Stations were piloted to assess validity and feasibility. Simple nontoxic materials were used to develop the rash by faculty familiar with moulage simulation.

Results: Sixty-four students were assessed on a Herpes Zoster case and 32 students on a Herpes Simplex case in morning and afternoon sessions. The total mean score obtained at all OSCE stations was 64.82 ± 10.22. Mean scores on the morning and afternoon dermatology stations were 62.72 ± 9.74 and 69.03 ± 9.98, respectively. Face validity for both stations was established through input of content experts. The internal reliability as measured by Cronbach's alpha between the checklist items on the morning and afternoon stations was acceptable at 0.60 (20 items) and 0.65 (18 items), respectively.

Discussion: The use of moulage technique to develop dermatologic lesions on simulated patients may be utilized for student assessment.