Symptoms and Signs of Diseases
A symptom is a subjective evidence of disease. A symptom may not be observable by another person. Anxiety, lower back pain, and fatigue are all sensations that only the patient can perceive. In contrast, a sign is objective evidence of disease. Fever, bruises, or rashes are signs that are evident to the patient or another observer such as a doctor.
Most Common Symptoms and Signs
Heart attacks are one of the most common causes of death. Common heart attack signs and symptoms include: Pressure, tightness, pain, or a squeezing or aching sensation in your chest or arms that may spread to your neck, jaw or back. Nausea, indigestion, heartburn or abdominal pain. Shortness of breath. Cold sweat. Fatigue. Lightheadedness or sudden dizziness.