What is deep vein thrombosis? Deep vein thrombosis (DVT) is a blood clot (thrombus) in a deep vein, usually in the legs. Clots can form in superficial veins and in deep veins. Blood clots with inflammation in superficial veins (called superficial thrombophlebitis or phlebitis) rarely cause serious problems. But clots in deep veins (deep vein thrombosis) require immediate medical care.
Diagnosing Exhaustion. Symptoms of physical and mental exhaustion include feeling constantly tired and worn out. Feeling physically and mentally exhausted can take their toll at all levels of life. We become less adept at our jobs, our relationships suffer, and energy levels drop to all-time lows.
Heat exhaustion is a more common and less extreme manifestation of heat-related illness in which the core temperature is between 37Â°C (98.6Â°F) and 40Â°C. Symptoms of heat exhaustion are milder than those of heatstroke, and include dizziness, thirst, weakness, headache, and malaise. Patients with heat exhaustion lack the profound central nervous system derangement found in those with heatstroke. Their symptoms typically resolve promptly with proper hydration and cooling.