On 15th March I was suffering sevear back pain and when I was urinating (in standing Condition) I fell down in the toilet itself and lying in toilet for a minute unconscious stage. After two three minutes I checked blood pressure and found 85/50. What are the reasons due to that it was happened and what precautions have to be taken by me so that it may not happen again.

You have a condition called micturation syncope. When you urinate you will have drop in your heart rate and blood pressure. Because of which you will have a decrease in the blood supply to the brain and you wil faint. If you are some BP medications you might have that. It might subside with time, but until that time try sitting while urinating and drink plenty of water to prevent sudden drop in blood pressure. If it is too troublesome please consult a physician. 

1 person found this helpful