She lacks vitamin D.

More as a challenge than by necessity he had thought of near plausible things to ask of her.

One of the idea he had was that her condition was cause by a deficit of vitamin D created by the body using sunlight and that the obvious solution was hours of naked sunbathing in the backyard. (and maybe somewhere else next.)

"So all I need to be cured is to get a little sunlight, at least that won't cost too much. " she tells him once he explains it to her.

"It won't be that simple mom, first you have to sunbathe naked or the spots that remain hidden will keep you ill. Then there are the massages and a few other things." he explains.

"Naked? But I can't do that, I will be arrested. And what are those massages you talk about." she remarks.

"That's why I have to be here when you sunbathe naked, to warn you if someone arrives. It will not be a miracle cure but you have to receive frequent messages on all your body with tanning oil while doing so, it will reduce the symptoms. The doctor also said that fresh air and sea water are good for you so we will have to look for secluded hiking trails and clothing optional beaches." he tells her.

"Honey, I don't think a masseuse will come to do this to me here or at such remote locations, what will we do? " she wonders.

"Don't worry mom, he left me clear instructions and I'm perfectly capable of doing it. There is nothing sexual or improper in that, it is just a medical procedure so you should try not to cum while it happens, remember it is reserved for our evening sessions. " explains Matt.

With that his mother strips naked and go to the backyard, ready to start this part of her treatment. He is in only his boxers but even that won't last, Matt goes to look for tanning oil and before coming back adds a few squirts of menthol extract to it to make the things more interesting.

When he comes out his mom is laying on a lounge chair on her belly.