My father at 78 a lot of the time scratches all over leaving scab marks on his head, back, arms, and legs. I seem to think he scratches without really thinking about it. I considered getting him gloves that would greatly reduce the scratching but everyone I've found online seem to not allow to grab anything(which he would not like). Amazon.com User Recommendation
I would definitely check for underlying first- allergies (washing powder, shower gel, lactose... etc), could be a skin condition, or a liver problem. All of which could have treatment.
Even if it is just habit/ boredom, that is still something worth knowing and changing, before trying gloves.
I would certainly change washing powder and shower gel first and choose a natural non chemical version of each. Wash clothes and bedding. Then try an antihistamine and a GP appointment. Gloves will not solve the itching just the scratches.