Cardiac tamponade in which fluid in the pericardium prevents inflow of blood into the heart (venous return). Constrictive pericarditis, in which the pericardium shrinks and hardens, is similar in presentation. Tension pneumothorax Through increased intrathoracic pressure, bloodflow to the heart is prevented (venous return). Pulmonary embolism is the result of a thromboembolic incident in the blood vessels of the lungs and hinders the return of blood to the heart. Aortic stenosis hinders circulation by obstructing the ventricular outflow tract
Hypertrophic sub-aortic stenosis is overly thick ventricular muscle that dynamically occludes the ventricular outflow tract. Abdominal compartment syndrome defined as an increase in intra-abdominal pressure to > 20 mmHg with organ dysfunction. Increased intraabdominal pressure can be due to sepsis and severe abdominal trauma. This increased pressure reduces blood flow back to the heart, thereby reducing blood flow to the body and resulting in signs and symptoms of shock.Many of the signs of obstructive shock are similar to cardiogenic shock, however treatments differ. Symptoms of obstructive shock include:

Abnormal heart rhythms, often a fast heart rate. Reduced blood pressure. Cool, clammy, mottled skin, often due to low blood pressure and vasoconstriction. Decreased urine output. Distributive
Distributive shock is low blood pressure due to a dilation of blood vessels within the body. This can be caused by systemic infection (septic shock), a severe allergic reaction (anaphylaxis), or spinal cord injury (neurogenic shock). Septic shock is the most common cause of distributive shock. It is caused by an overwhelming systemic infection resulting in vasodilation leading to hypotension.
Suntan may refer to:

Sun tanning
Suntan (apple), a cultivar
Lockheed CL-400 Suntan, a concept aircraft
Suntan (1976 film), a Bollywood drama film
Suntan (2016 film), a Greek drama film
Project Suntan, a NASA project involving liquid nitrogen research