Spot on my head that is not growing hair.

For years I've always had this spot on the front of my head that wont grow hair past a couple centimeters! And it has always been like this ever since I went natural in 2014. It is EXTREMELY FRUSTRATING! I'm very desperate at this point to do anything to get my hair grow! Please help! P.S. it's basically the whole front of my head that wont really grow.

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