Would husband qualify for ESA?

I wondered if he would qualify for ESA if his illness gets worse (he is self employed but has a chronic illness). he gets carer's credit (earns over the threshold for carer's allowance) and I'm not sure if that means he would qualify for cont based ESA or not.

I have researched online but it seems vague- usually needs Class 1 conts or can be for carer's too (carer's allowance seemed to count?)

Or if not income based ESA? - not sure either as we also got PIP and cont based ESA for me, and qualify for family tax credits. (I think working tax would go if he wasn't working)

Any advice welcome. Thanks

Hi, yes it would, it's long standing and he's on pretty strong meds and he would probably meet a SH criteria which would be quite specific, he's under consultant's care etc. He is self-employed and for now that would possibly be the best option for him. We would also lose our working tax credit if he were to stop working. I am just thinking of if it worsens and what the position would be, as you know it is not simple with these benefits. As he claims Carer's credit, this seems to give Class 3 conts so it was a bit confusing as Carer's allowance seemed to meant they would qualify for cont based ESA. Never simple is it. Thanks for the reply.