I have this friend who has this problem. I dont know if it small or big. Well whenever my friend is feeling very stress out her neck start to form lumps sizes of lemons. She told me it hurt alot. Three days ago she was completely stress out and those lumps formed up again this time it was worster then ever she said that she felt like dizzy. The lumps only form up when ever she is stress usally in the back of her neck. The lumps do go away but they always come back. Can you tell me what those lumps can be? Is it serious?