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.
There are two types of heat exhaustion: 1  Water depletion. Signs include excessive thirst, weakness, headache, and loss of consciousness. 2  Salt depletion. Signs include nausea and vomiting, muscle cramps, and dizziness.