When was the last time he was hit by a lightening? And also how much damage did it cause? Sometimes electric burns can cause the proteins
in the muscles of the body to burn and some of it can dissolve in the blood vessels. The kidneys and the spleen
are the major retro-peritoneal organs who get most of the blood supply, so they take up these constituents and react sometimes in such alarming ways to show something is wrong in the body.
other causes of shivering should be ruled out one by one. Plz get a PBF for malaria
, Urine proteins and urine culture/senstivity done ASAP. in the meantime, give ur husband proper care emotionally as well as physically as most of the times, such incidents leave a major impact in the mind of the individual. Anyone at his situation can be scared as hell, so good emotional care also will help a great deal in curing him which only you can give to him.
God bless u.