Body Dysmorphia

Is body dysmorphia a real thing?! I always complain about my thick thighs and cellulite which my family and friends say I overreact, but when I look in the mirror.. Its all there! I think they are just trying not to be rude. Recently i feel like i have somehow developed a bump on my nose which prevents me from posing a certain way when taking pics. Also... The left side of my face seems so ugly and I hate looking at it. When taking pics I always pose on the right side. Is this all in my head?!😓