
Have you walked down the street, noticed a person or dog with a limp, skin condition, or other visually-obvious ailment and wondered: what is that disease? No? Well, I do it all the time. And so do many of my friends, especially those who are MDs.Is that person afflicted with alopecia areata or universalis? Oh, that dog is limping.... is it the right or left front... hmm, let me see, oh, it's the left, no right front limb, definitely the right front (I wonder if the owners think it's the left front). Could it be an injury? Osteoarthritis? Post-op? OCD? And the occasional dog wearing an Elizabethan collar (cone): was she just spayed? Maybe...