spot in back of my head

I normally shave my head bald but one day wild shaving my head i got distracted and accidentally shaved a pieces of hair and skin off i started bleeding  i  rinse it off and put after shave on and figuere it will grow hair like any other. i started to notice that i had a spot were i cut my self on the back of my head and every time i shave it got much bigger is thier any treatment for this some people tell that i comes from alot of stress and your hair cells stop growin am 26 yrs and it does run in my family boldness?

[DrNoopurMD]

Hi,

How are you?
There can be many reasons for hair loss or baldness like excessive compulsive pulling of hair, trauma, chemotherapy, severe stress, iron deficiency, fungal infections, and hyperthyroidism. Premature male baldness is linked to genetics. It appears to be a X linked trait.
Do you have baldness in your family?
If yes then it can be cause in your case otherwise it seems to be secondary to trauma during shaving.
Take care!

[SetandSpike]

Much like a scar or burn on your arm, the cut you inflicted while shaving may have removed the hair follicles, thus preventing new hair from being grown. If the cut was deep enough that the follicles were removed, then no more hair would grow from that spot, and you'd have a small patch with no hair. Many people, though, have natural small patches that don't grow hair. Though present at birth, these aren't birthmarks, since birthmarks are only a pigment variation, and hair grows normally - if not excessively - over these spots. If you are truly worried you did some damage, I would show it to a doctor. They should be able to tell if there is any scar tissue, and by looking through a magnifying glass, be able to tell if the hair follicles were permanently damage. I am no doctor, though I wish you luck in finding your answer.