Draco Malfoy had only spend 20 minutes in the home of the Weasley family and he was already annoyed to no end.
Even with Ronald, the Weasley he had the most interaction with as a child, having forgotten who he was, he still was a pain to deal with.
His patient obviously had decided from the first second, that he didn't like or trust him and had showed that non-verbally in a way that made it difficult to examine him, even if he was not openly opposed him.
The living room was overpopulated with worried Weasleys, that obviously did not trust him either. Every movement he made was closely observed by a bunch of redheads.
Magical examination spells failed and so he had to stick to other methods. It needed a while until he finally found a loophole.
Potions.
While magical infused potions didn't work, potions that relied on natural non-magical ingredients worked just fine.
Draco started to rummage in his magically enhanced briefcase until he finally found a potion that he had high hopes for.
He never had such a case, but since Weasley was still able to notice even non-visible spells, he was sure there must be still some magic left in him. Perhaps. So he thought, it just needed enough magic to break the impervious wall between the the magic inside of his patient and the outside.
In the little bottle, that he put on table between him and Weasley, was a potion that was usually given to children of magical family, when there was the suspicion they may be squibs.
It acted similar to putting oil in a fire and intensify the magic inside the the patient for a short time.
Draco's theory was, that if there were little magical attacks against the anti-magic-wall again and again, at some time it would wear down and there would perhaps be crack to that was enough to get him ton one of quarantine chambers in St. Mungos.
They'd to go there.
The thought of a whole decade of unused, pent up magic inside Weasley, was terrifying. He could kill his whole family by releasing it all in ones. Plus he probably wouldn't have much control over it after not having used magic for years. One sloppy movement with the wand and the whole house was gone.
Draco hated to admit it, but the old Ronald Weasley had been a powerful wizard. Cunning and naturally gifted, even with far inferior, defect or unfitting tools he'd been always beaten Draco in exams. While Potter used Magic in pure instinct, Weasley used his magic usually very strategically, calculated, like setting pawn on an imaginary strategy game board.
A Ronald Weasley that used his magic power without planning and control, was disaster.
"I never had a case like yours." he explained seriously, ignoring the herd of Weasley around him and his patient. It hadn't been so hard to act professional, since his first week in St. Mungos.
"We've got to test things out and see fit works. I sure that the same thing that blocks you're ability to have contact with magic is also blocking your memories." Draco rubbed his eyes. He was so tired. Thirtysix-hours-shift and now this...
"See, your whole family is magic you grew in a magical environment since birth. If this...thing wanted to block your memories it had to take magic away, because your memories are all tied to magic."
he pointed on the bottle.
"please take 10 drops of this twice a day. Ten in the morning, ten in the evening. I hope it'll help to make the anti-magic barrier thinner so that we can tear it down eventually.
For a moment Weasley seemed to consider if he should trust him, then he nodded slowly.
"Great. Now I can finally go home and sleep." grumbled Draco more to himself than to anyone else and he stood up.
"I'll come and see how far you'll be next week." He put his stuff back into his briefcase and went to the door.
"If there's something going wrong or you notice that your magic is coming back, please inform the hospital immediately. Magic going rampage can pretty destructive...good evening,Weasley."
he disapparated.

A few seconds later he appeared in an Apparition Area close his apartment in London.
He almost run inside house, fell on the couch and was just about to pass out, when the frigid tenor voice of his father let him tear open his eyes again.
"You are a slob, son. You are a disgrace to your family."
Well, thank you father, that's a nice way to great your only son.
He sat up and straightened his back looking in the stiff face of his father.
"A nice evening to you to, father." Draco instinctively started matching the chilly tone of his dialogue partner.
"What brings you here." Lucius Malfoy would never visit anyone without ulterior motif. Draco doubted that his father ever seen any human, including his mother and Draco, as anything else than an annoying, unwelcome presence, as long as contact with them weren't benefiting for himself or for the future of the Malfoy Family.
Draco would never openly oppose his father, they were family after all and he still felt loyal to his family, but he wanted his relationship with his son to be different.
He loved his son and he wanted Scorpius to know that.

"The young Nott was caught by the Aurors." said Lucius, crossing his arms in front of his chest and staring in the fireplace.
"I was surprised, that he could to his stupid killing spree for so long without being caught." muttered Draco. Theo had been sleeping in the same dorm, back in Hogwarts. They been in the same year and Draco didn't hate him when he was in school.
Theo was not not exactly the most intelligent person, he unusually sincere for a Slytherin. The combination of loyalty and stupidity made him to a good candidate of you needed an underling.
Draco didn't like underlings anymore though.
He was much more happy with fixing people, than commanding them.
"Potter found him in an routine visit. He wasn't even trailing the foolish boy." hissed Lucius and looked at him.
"I know you were in school together, but right now, we've got to concentrate to keep the name of the Malfoy Family clean. Don't do something stupid." Draco nodded.
"I wouldn't even think about it. What he did was his decision and I've got to keep my son and wife safe and..." Draco smiled challenging at his father
"...I actually like my job. I don't want to lose it."
Lucius wrinkled his forehead in disapprove, he wasn't exactly happy that his son became a healer instead of a politician.
"That's nice to hear, son." he said icy and then made his way towards the door.
"You mother wants to see you, how about visiting us for New year."
Draco copied the cold smile.
"I'll talk with Astoria about it and then sent an owl."