Sadly it is hard to say exactly why you are experiencing a feeling of heat from the knee down on your left leg as there could be a number of reasons for this symptom. It is therefore best and most sensible to book an appointment at the doctors. With any medical concern it can indeed be tempting to try and 'google' your symptoms rather than wanting to trouble a doctor. However this can be very detrimental and can cause a lot of worry and stress that really should be avoided.
You will find, if you google any symptoms or ailments, a whole host of scary diseases and causes that come up which can send you into panic. However nine times out of 10 it is actually nothing that serious at all. Therefore going to the doctor as soon as you feel something strange is the best policy. They will be able to examine your leg and talk through when you are getting the sensation and how long it has been happening for. They should then be able to diagnosis what the problem is and prescribe any medication if needed.
If you can't actually get down to the doctors for some reason then it is still worth phoning them up to talk through your symptoms. Once you know the answer to why you are experiencing the sensation then it may well be a great weight off your shoulders and you will have wished you had got it checked out straight away.
You will find, if you google any symptoms or ailments, a whole host of scary diseases and causes that come up which can send you into panic. However nine times out of 10 it is actually nothing that serious at all. Therefore going to the doctor as soon as you feel something strange is the best policy. They will be able to examine your leg and talk through when you are getting the sensation and how long it has been happening for. They should then be able to diagnosis what the problem is and prescribe any medication if needed.
If you can't actually get down to the doctors for some reason then it is still worth phoning them up to talk through your symptoms. Once you know the answer to why you are experiencing the sensation then it may well be a great weight off your shoulders and you will have wished you had got it checked out straight away.