Hi I just discovered a couple of days ago, a hard lump behind my ear/neck area that's about 1cm in diameter. Also recently I have been getting more migraines than usual (I get them because of low blood pressure) and I'm really worried about this lump and I'm wondering what it could be..

A picture

I have the same problem and it looks exactly like your picture . I'm going to the doctor to get it checked out tomorrow . Ill keep you posted when I find out . But I'm freaking out over it . Omg .

Did you ever find out what is was?
I have this same lump behind my ear. I just discovered it a few minutes ago.
I've also been getting headaches, but only on the right side of my head. ( Same side where the lump is located.)

I have the exactly the same problem. It doesn't hurt at all when touching. I am going to call my doctor tomorrow to schedule an appointment. I will keep you posted.

I have had one for a few weeks now too. Anyone get any answers?

There is a main sweat gland exactly under the ear, where you lump is. I had the same problem many years ago. The best treatment for this is anti-biotics, make sure you take the full course or it will most likely come back up. DO NOT SQUEEZE or attempt to desize this lump or it will get infected. This is often caused by eating too many sugary thing e.g. sweets and chocolates. Drink lots of water and get some anti biotics from your GP/Doctor.