DS has a chronic illness, one of the symptoms of which is Hyperacusis (sensitivity to certain noises which causes extreme pain). He has had this for 6 years, so not a new thing.
At the weekend DH needed to mow and strim the garden. We live in a barn conversion and the "garden" is more field in nature and gets very wild if not managed. The petrol strimmer is one of the noises that hurts DS, the electric one is ok (not wonderful but manageable with headphones).
DS wanted DH to use the electric one, DH got in an arse and refused as it would take longer. He would not even compromise and do the back garden with the electric one, which would have been fine as DS could have stayed at the back of the house to minimise the noise from the petrol one in the front.
DS going out would have caused other issues to do with his illness, once or twice would be ok, but this is going to be a weekly argument until winter.
So who is right - DH as the work has to be done or DS as this causes him physical pain over and above the pain he is already in?