I had one just like this! In fact I think people on mumsnet got completely fed up of me posting about various High Needs issues. Me and BabyIsaac even had our own support thread going at one point as we were pulling our hair out!
My ds was so touchy and sensitive, hated being held unless I walked around with him but wouldn't be laid on the floor or put in a bouncer, wouldn't go in pushchair or car seat without screaming so I became house bound and isolated. He fought naps so much, would scream and scream even when I rocked him to sleep and even then would only sleep for 30 minutes at a time in the day so always woke up screaming and clearly still tired. Thank God by night time he was so exhausted that he just slept straight through from 10 weeks, otherwise I think I'd have really lost my mind.
My main problem was the worrying about what kind of a child he would be and being so scared to go anywhere in case he had a meltdown. It was all so unpredictable and just hellish. No one I have met has ever had a baby like hisso I felt for sure I was doing something wrong or tere was something seriously wrong with my ds. After countless trips to Health Visitors, GP and Cranial Osteopath, even trying him on reflux medication, we just decided that we had to get on with it and stop trying to figure out what was wrong with him or us. He was perfectly healthy, he was just miserable!
Turns out that he was just very very very frustrated and super aware of everything. I like to think he was clever and got bored easily but the truth is we'll never know why our experience of parenthood was so different to everyone elses.
All I can say is do whatever you can to survive. Focus on any tiny little success. I remember the first time I managed to get round the corner to my Dad's house with ds in a pushchair without screaming, he was about 10 months old and I felt like I'd conquered Everest! Such a big deal to me but something most parents take for granted.
At 7-9 months my ds was worse than ever. Everyone kept saying he'd be better once he could sit up/ crawl/ pull up to stand etc but by this age each of these milestones came and went with little improvement. It's when I really started to lose hope that we would ever have a life again.
Like BabyIsaac, my ds still is very strong willed (bossy perhaps!) but he's 23 months now and just such an amazing little boy. The turning point came when he walked at 11 months but even then he still required a lot of input and began to tantrum over everything! He really chilled out once he could talk and understand more and be pursuaded out of things and offered an alternative rather than screaming and crying.
I would never call my ds easy going but then again very few toddlers are. Slowly but surely all the placid babies I saw at mother and baby groups have all become stroppy, bossy toddlers wheras my ds really has got easier and easier and continues to do so every day. He really is just so chatty and energetic though so it's easy to see why he was so frustrated at not being able to explore and communicate, he's into everything and just wants to be a mini adult. Someone on here once told me that some people are just born with personalities that aren't suited to being a dependant, immobile baby but they make excellent shildren and adults. That seems to be the case for my ds... he makes a much better toddler than he did baby!
Things will get easier.