Erythema migrans and erythema multiforme both cause target- or bull’s-eye-shaped lesions. Erythema migrans is due to Lyme disease. Erythema multiforme is an immune-mediated hypersensitivity skin ...

Acting fast after a tick bite can lower your risk of developing Lyme disease. You just finished a satisfying summer hike or wrapped up a weekend of yard work when you spot a tick clinging to your ...

Lyme disease is prevalent this time of year, especially in the Northeast, mid-Atlantic and upper-Midwest regions of the U.S. — though there have been reports of cases in expanding areas, according to ...

A 43-year-old woman presented with 6 months of recurrent bilateral eye pain and redness alongside spontaneous urticaria. She noted episodes of quarter-sized itchy lesions appearing on her abdomen, ...

Add Yahoo as a preferred source to see more of our stories on Google. We usually think of COVID-19 as a viral illness that causes respiratory symptoms, like congestion, sore throat and a cough. But, ...