Underlying causes of low blood pressure. Low blood pressure can occur with: Prolonged bed rest. Pregnancy. During the first 24 weeks of pregnancy, itâs common for blood pressure to drop. Decreases in blood volume. A decrease in blood volume can also cause blood pressure to drop. A significant loss of blood from major trauma, dehydration or severe internal bleeding reduces blood volume, leading to a severe drop in blood pressure.
Influenza, commonly called the flu, is caused by viruses that infect the respiratory tract. Flu symptoms include fever, chills, cough, sore throat, headache, muscle aches, and. fatigue. The incubation period for flu is about one to four days. Flu is contagious, and symptoms may last up to seven to 14 days.
Symptoms. Hepatitis A signs and symptoms, which typically don't appear until you've had the virus for a few weeks, may include: 1  Fatigue. 2  Nausea and vomiting. 3  Abdominal pain or discomfort, especially in the area of your liver on your right side beneath your lower ribs.4  Clay-colored bowel movements. 5  Loss of appetite.f you have hepatitis A, you may have a mild illness that lasts a few weeks or a severe illness that lasts several months. Not everyone with hepatitis A develops signs or symptoms.