Strange throbbing/ pulsing in my thigh just above knee

I think it's because of unhealthy diets and being overweight.  It happens a lot when I drive.

I am also having this feeling in my left knee and i quite worried as i am already on warfarin due to  resent blood clots in my lungs. surly it can't be another?  

I'm 13, do a lot of sport and eat pretty healthily and it only seems to occur whenever I'm in bed getting ready to sleep. I'm guessing it's because, as people have said, your muscles are tired from usage throughout the day so they need to sort of 'recharge' ASAP to get ready for further usage, which leads to a form of an accelerated circulation of blood in that area to speed up the process. Just a theory I thought of, but it seems like it could be true.

For about three days , i have feeling the same cell phone kind of vibration in my left thigh , lasting for about 5 sec. sometimes. I am 23 years old male and I have doing work out recently (Doing pull ups mostly). It does not hurt me, but something seems to be fishy so when i goggled it, i landed here. So has anyone found answer to it or not?

My right thigh is throbbing at the moment too it's on the outside near the middle of the thigh it's like vibrating idk if its with my heart beat or not buts quite strange it's 11:21pm and I haven't been able to sleep because of it any help would be greatly appreciated if you do find out what it is or what's causing it  ***post is edited by moderator *** private e-mails not allowed*** Please read our Terms of Use

I've had the exact same thing. Any diagnosis?

I've been having this for a year or two. According to the mighty Internet, low potassium levels may be the cause of the incessant twitching. It is a constant throbbing a little bit to the left above my right knee, but it doesn't hurt. It just annoys the penguins out of ya. ;) My recommendations: eat a lot of bananas and search up foods with high potassium levels. You can also try massaging it.

I have this since many years. It happens in lower thigh just above the knee. Sometimes it happens in arms as well. The cause seems to be totally mystery still. Sometimes i am totally sedentary but sometime i regularly exercise. And I have experienced this twitching/spasms at both times. Now a days (since last 2 years) i regularly workout, but still get it. Yesterday evening I was sitting at home with my laptop in my lap and all of a sudden it started in my right thigh. It was so intense that my laptop started kind of bouncing - I mean it was so strongly felt. After that i went to gym as usual and forgot about this, and I guess it did not occur later at night. Now (next day) its noon and suddenly i started feeling that sensation again. It wasn't there until I thought about it - strange.

do any of you smoke cigarettes?

i have the same thing happening on the right side of my right leg, it is freaking me out. my mom says its just my heart beat but i dont think your heart beat should be in your leg .  i have a bruise where it is happening, does anyone else?

i dont, im only 14 and this is happening

It may be a twitchy nerve, muscle or even your pulse, You have huge arteries that carry the blood from your heart down to your toes, and from those it leads into smaller veins, so it is quite plausible as your mum has said that it may be your pulse, especially if you are sitting in a position putting pressure on the vein, it needs to pump a little harder to get around.

I have the same pulsing/throbboing around my left kneecap that many have mentioned. Just returned from the doctor's after dealing with it for nearly 2 weeks. He said it was just a twitching muscle, used a medical term for it, but compared it to an eye that twiches. So everyone can relax:)

pulsing right leg just above knee inside.    I,m on  various meds.   started on buspirone  started on 10mg obout 6mo. ago couldn't handle cut back to 1/2 of 10 mg twice day seemed to be ok.  8/13/13  started back  to 10 mg twiceday  .   noticed rightaway not thinking clearly anxiety seem worse.  went to er fri eve. could find nothing wrong  ct/blwk/xray/  going to primary in am. 21/13       fri eve bp 210/110  when i went to er.   

Thanks everyone , all the comments really helped me with this question. This throbbing/pulsing nerves in my knee was a bit scary because I did not know what is was . But just reading your comments makes me feel at ease.