When I walk and carry some weight i.e. of 10kg approx, and also walking on stairs, I get lots of sweating from full body and feels exhausted( feels like If I will not rest or sit at that time I will fall down). I feels dizziness. Once I sit and rest, full body starts sweating then after few seconds everything's normal. Please suggest to whom I shall contact and what tests need to be done for further investigation. Any suggestions what will be the cause? Thank You.