Fetal death has been attributed to numerous other
maternal diseases, including hypertension, thyroid
disease, kidney disease, asthma, cardiovascular disease,
and systemic lupus erythematosus. Pregnancy
loss in the setting of these conditions typically occurs
in women with clinically apparent and severe disease.
Asymptomatic disease (such as mild glucose intolerance
or abnormal thyroid function) has been proposed
as a cause of fetal death. Although of interest,
the theory remains unproven.