Experts are warning that a seemingly harmless habit could lead to infections. The culprit? Itching the inside of your ear. What may feel like an innocent action could actually be doing more harm than ...

Allergies and sinus infections can cause many similar symptoms, such as nasal congestion. However, the conditions have ...

Siku, a polar bear at Lincoln Park Zoo, developed allergies to various substances including human hair dander (Credit: ...