Recently my legs have unexplained bruises of varying size. my ribs and hips feel bruised. i am excessively thirsty and have lost weight. why?

Serious signs!: you need to see a doctor immediately. unexplained bruising can be a sign of thin blood. (hypercoagulable state) you can be at risk for spontaneously bleeding internally, or in your brain. additionally the weight loss and thirst need testing. commonly they are from new onset diabetes, but could be from more ominous causes, particularly in light of your bruising/bleeding