My husband developed an itchy (no painful) skin rash immediately after laying in the sand (no grass) to work on his trailor. It spread and became infected so he was given 2 steroid shots & a Medrol steroid pack & an antibiotic. About 7-10 days later he developed a hacking, dry, unproductive cough., a loss of appetite which has continued for 3 weeks and and the last week he has been having night sweats. His doctors have not given us a Dx...we are worried, he had a CT scan done 2 days ago which said, Predominantly apical groundglass opacities with several scattered nodules some with cavitation. A nonspecific finding. The differential diagnosis includes a hypersensitivity pneumonitis, histiocytoiss, or an infectious process. Please help.....