Hi and thanks fir the query,
The generalized body stiffness you are suffering to me requires a proper rheumatological screen. It looks more of a disease of the articulations, chronic autoimmune disease
. Rheumatoid arthritis
, Acute rheumatic fever
based on your past history and family history are important aspects that shall be taken into consideration during the evaluation process. Serum electrolytes, especially measuring blood Calcium and Magnesium levels shall also be important, for low Calcium levels may as well contribute to stiffness and cramps.
I suggest you consult a rheumatologist
for his own specialist opinion.
Thanks and best regards,