Reliance on this app would be rash...
Developed by the Emergency Medicine Residents' Association in the US, this app aims to provide a fast, easy and accurate way to diagnose important rashes that present most commonly to emergency departments.
I took a look at it to see if it would offer anything to the general practitioner.
The app opens to four different rash types: diffuse erythematous, maculopapular, petechial/purpuric or vesiculobullous. By selecting a rash type, then answering a series of simple yes or no questions (e.g. regarding presence of fever), the algorithm leads the user into a