Hard bump on forehead that randomly comes and goes

[SabbyK]

Every so often (like once every couple of months) I get a hard knot or bump somewhere on my forehead.  There is no pain or discoloration, but the bump is very hard and about half the size of a walnut.  It goes away either within 6 hours or overnight and doesn't always show up in the same place.

This seems bizarre to me, but I don't know if I should see a doctor about it because it goes away before I could get to one.  Any idea what this could be?

[Kaka1105]

I have the exact same thing, I just came back from dermatologist and he can't help me because he can't see it. It happens at night and I take pictures to show the dr.  It lasts for 6-8 hours in the same spot.   I've seen a vascular dr, neurologist , neurosurgeon and today the dermatologist.  I've had 16 bumps since February 2013.     Did anyone help you, what did they say.

[Kaka1105]

I have the exact same thing, I just came back from dermatologist and he can't help me because he can't see it. It happens at night and I take pictures to show the dr.  It lasts for 6-8 hours in the same spot.   I've seen a vascular dr, neurologist , neurosurgeon and today the dermatologist.  I've had 16 bumps since February 2013.     Did anyone help you, what did they say.

[bdc123]

Did you ever find out anything about the lump?  I had the same thing happen a week or two ago.

[specialmom]

Hi bdc123, is it all better now?  Do you still get this?

[SassyLassie]

Could be a sebaceous cyst. If it keeps bothering you, see a dermatologist, maybe he/she can shed some light on what is going on.