Greetings.
First of all it's unfortunate that you are suffering from such a rare condition.
->As of your problem is concerned follow instructions as below:
* A
cold compress such as an icepack or a bag of frozen peas should be applied to the affected area for 20-30 minutes in order to speed healing and reduce swelling by constricting the underlying blood vessels in response to the cold. Do not apply ice directly to the skin. Wrap the icepack in a towel.
* If the
bruise takes up a large area of the leg or foot, the leg should be kept elevated as much as possible during the first 24 hours after the
injury.
*After about 48 hours, heat in the form of a warm washcloth applied to the bruise for 10 minutes or so two or three times a day may increase blood flow to the bruised area, allowing the skin to reabsorb the blood more quickly. Ultimately, the bruise will fade in color.
* If Pain, take medication after consulting your Doctor.
Note:
Finally it's just a guidance. Not a definitive treatment as we haven't seen you personally. You've to realize that these are temporary & symptomatic
home remedies. We don't know what your exact condition is unless we see you personally.
If you feel your condition becoming worse than before in spite of above, it's best advise to consult a General Physician who would treat you after ruling out other causes causing you bruise.
Hope it helped for you.