A medical examiner has yet to determine the cause of Smith’s death almost three weeks ago in Seminole, Florida.

Prior to her passing she had allegedly used Topamax, Dilaudid and Methadone, as it was revealed in hearings regarding the final resting place of her remains.

These three drugs are not normally prescribed to treat lupus, a disease which affects the immune system. Pregnancy, however combined with lupus could present a severe amount of pain to a patient according to an expert contacted by Access Hollywood.

According to Dr. Bob Lahita a practicing physician, Chairman of Medicine at Jersey City Medical Center and Professor of Medicine at Mount Sinai Medical School who has authored several books on the disease, about 60% of lupus patients develop a condition called Fibro Myalgia. The condition causes chronic and extreme pain across the body in muscles, tendons and ligaments and can make it hard for a patient to sleep. Such occurrences leave open the possibility that painkillers Topamax and Dilaudid may have been used for comfort, Dr. Lahita speculates.

Dr. Lahita has been in contact with at least one other media outlet regarding his opinion, since claims that Smith had the disease began to emerge.

In addition to pain, Lupus.org, a Web site run by the Lupus Foundation of America, notes that pregnant lupus patients have other concerns to worry about. Antiphospholipid antibodies, which hurt the immune system can be found in many patients with lupus and “pose a particular risk” to pregnant patients by increasing the chance of a miscarriage.