Eng .... it is there .....
Passengers should carry a letter from their doctor confirming the need to carry syringes, needles and medication in the aircraft cabin. As security screening at airports is outside the control of British Airways, you should discuss a contingency plan with your Doctor to enable you to travel safely in the unlikely event that the authorities do not allow your equipment to be carried in cabin baggage.
Its sad but in this modern world of ours one needs to study carefully before even stepping outside your front door ....