Many of us have felt a muscle in some part of our body suddenly and involuntarily tighten, causing a twitch or even severe cramp. Muscle spasms are common and typically don't signal a severe health ...

Anal fissures are small tears in the lining of the anal canal. They can cause sharp pain and bleeding, especially during or after bowel movements. Anal fissures can be acute (short-term) or chronic ...

Lindsay Curtis is a health & medical writer in South Florida. She worked as a communications professional for health nonprofits and the University of Toronto’s Faculty of Medicine and Faculty of ...