I think I'm at the stage where I need to go to the GP about DS (7.5) Would DS need to come with me?
We are looking at testing for dyslexia this year (y3) as he's struggling with writing. He still can't write his name accurately. He has blue tinted glasses which made a difference to his reading in the past year. (Irlens Syndrome?) Dyslexia/ Dyspraxia are rife through my paternal family, and present in my maternal family and in DH's.
However, I think there is more to him:
He had a speech delay as a toddler and had input from SLT for a couple of years. He was talking appropriately for starting school and discharged at 6. The therapist was thrilled with his progress when she met him for the final time.
He found SATs tough- understandable with the suspected dyslexia. I feel like we never truely left the terrible twos behind. Tantrums started when he was 10 months and realised that "no" meant that he wasn't getting his own way. The toddler years were intense. They eased off as his speech improved. 5-6 was quite a good phase but he did occasionally lash out if DH was away for several days or when tired at the end of terms. It's escalated since Easter when they were preparing for SATs. One day he had a 4 hour tantrum because I asked him several times if he had changed his reading book. It wasn't constant but he flared every time I went to his room. On the way from school he was trying to kick at me and his brother and absolutely raging. We've had several tantrums since, not as prolonged, but intense. He can be quite melodramatic and over react to petty things. Our home background is very stable and calm and his brother is very sunny. Behaviour at school usually exemplary. Has been known to take himself aside to calm down so doesn't blow. Only had one tantrum at nursery, the staff were stunned.
He has a reputation for being very intelligent. He joins information up easily and remembers it. He gets very in depth in discussion. We once had a conversation lasting a good hour about the causes of WW2 
. He's very focused on construction and can play for hours at Lego etc. When he was nearly 3, a senior person at the children's centre was astonished that concentrated on a piece of art work for about half an hour. He loves details.
He's not very grounded in the practical world. Getting out of the house to school is a daily slog. Every thing needs multiple reminders to the detail of rubbing the toothbrush across his teeth. Awful at finding things. Constantly trying to deviate back to what is on his mind. Struggles with things like changing his pants or reading books.
He struggles at the table handling cutlery. He has to be reminded to sit on his chair and wriggles and shuffles off it. Food goes everywhere. He's average level of picky for his age.
Chews at things. Currently on his hair. Previously nails. Chewed through a coat at collar and cuffs.
Not very with it at sport, feels like he's on a slight delayed reaction. Progress at swimming slow and can get stuck on something for months. Regularly in danger of his little brother catching up. Rode a bike at 6... his brother learned the same day.
Very sensory about clothes. Does not wear trousers and hasn't since he was about 3. Has worn them for 3 hours in the past year despite the Beast from the East. Does not like long sleeved tops. Jumpers must be soft and fluffy with a long zip.
Socially he gets on well with people at school and seems to be well liked despite being seen to be eccentric. Didn't develop proper friendships until school but accepted people joining in with his interests although could get frustrated if they didn't build things to his perfectionist standards. Has a well established best friend. Can be quite straight talking for example he doesn't see the point in having girlfriends yet as they'll change their minds before they're grown up. A valid point, but a bit lost on his paired up 7 year old friends 
He has no issue in telling bigger children/teenagers if they're doing something dangerous (such as sitting on the roof of the youth shelter).
It's his temper and the combination of other features that makes me wonder if there is more underlying. It's been on my mind over the summer and over the weekend I learned that his older cousin has been identified with dyspraxia, ADHD and borderline for ASD and he's so similar in personality and interests to DS.