Hi, i am a 21 year old female, i have a small hole in my heart and i suffer from a condition called NF1, for the past few months i have been suffering with constant light headedness/dizzyness as well as headaches, tiredness and general weakness, i also feel permanantly hot even if the room is very cold and i have a tingling numness in my fingers, i have been to my doctor twice before and both times i have been told there is nothing wrong. please can you give me your opinion. many thanks jess