While I havn't done all to much research I think this could help people understand the sub-catagories better! I didn't make thi,s it's by ADHDAlien! I found them on pintrest lol -AD(H)D and what it is- ADHD stands for attention deficit hyperactivity disorder. Usually, people with ADHD have autism, but it is not guaranteed. People who have ADHD usually can't focus very well, and also have very impulsive and hyperactive behavior. Both their mind and body are hyper, and a lot of the time, people with ADHD will overthink everything. However, everyone's experience is different. ADD is like ADHD, but without the physical hyperactivity, ADD isn't actually a thing, but it's kinda like a "sub-category" (that's the only way I can put it, sorry) of ADHD. Your brain, however, is very hyper and tends to overthink everything. People usually take medications in order to dull the effects of ADHD and let them function
Again all art and text credit go to ADHDalien and @Ender_dragon1234 I have 0 motivation to write stuff rn sorry!