1 A person may or may not have any symptoms previously, but all of the sudden a plaque ruptures, triggering a chain of events and a sudden heart attack.  The other is a more gradual progression of coronary disease. In these patients, an artery is getting narrower over time.
Knee pain at night causes. Common causes of knee pain at night include sprains and strains, anterior knee pain, menisci or cartilage damage, osteoarthritis tendonitis, bursitis, torn ligaments or tendons, bleeding into the joint, Osgood Shatlerâs disease, gout, septic arthritis, overuse, and obesity.
Quick Answer. Ankle and leg cramps at night often occur for unknown reasons, but structural disorders, such as spinal stenosis; medications for blood pressure and cholesterol; or conditions such as dehydration and diarrhea can cause the discomfort, according to Mayo Clinic. Pregnancy and muscle fatigue also cause ankle cramps.