Many everyday symptoms are inconsequential. You have a poor night’s sleep to thank for your bloodshot eyes, or a new lotion ...

Lyme disease can cause a bullseye rash, but there are vague symptoms to watch out for, too. Doctors share the common signs of this tick-borne illness.

What are the symptoms of Lyme disease? Symptoms include fever, fatigue, joint pain and skin rash. These symptoms can be mild or progress to severe infections that require hospitalization.

Alzheimer's disease can cause mild symptoms at first, such as problems with memory or planning. Learn what to expect in the beginning and as the disease progresses.