OPINION ON MOTION FOR REHEARING
Appellee's motion for rehearing is denied. Our opinion of December 20, 1989, is withdrawn, and this opinion is issued in lieu thereof.
Jean Gatling appeals from a summary judgment rendered against her in a medical malpractice suit that she brought against the estate of her psychiatrist, Dr. Ferald 0. Mauk, deceased. The doctor’s estate, represented by its executrix, Nancy Perna, contended that Gatling’s suit was barred as a matter of law by limitations, and the trial court agreed. We disagree, reverse the summary judgment, and remand the cause to the trial court for further proceedings.
Gatling’s petition sets forth the following details of her medical history while she was under the care of Dr. Mauk: Treatment for Gatling’s psychiatric condition began in September 1980 and continued until December 1985. During all that time, Dr. Mauk prescribed various phenothiazine-type drugs including Stelazine, Prolixin, Haldol, and Moban. These drugs carry the risk of causing tardive dyskinesia. Gatling developed tardive dyskinesia sometime between 1980 and 1985 while taking these drugs. Dr. Mauk never informed Gatling of the possible side effects of these drugs and was guilty of negligence in his failure to obtain her informed consent to their use. Also, Dr. Mauk negligently failed to timely refer Gatling for neurological care after she developed tardive dyskinesia and negligently continued to prescribe the drugs despite the known harm they had already caused. Further, with intent to deceive, Dr. Mauk fraudulently concealed his malpractice from Gatling and lulled her into believing her neurological disorder was not associated with the drugs. Gatling’s pleading was filed on August 31, 1987.
The doctor’s estate answered by general denial and sought specifically to limit its liability and damages in accordance with the Medical Liability and Insurance Improvement Act. Tex.Rev.Civ.Stat.Ann. art. 4590i (Vernon Supp.1989). This act specially defines the theory of recovery sought by Gatling with respect to Dr. Mauk’s failure to disclose the risks in question. Id. at §§ 6.01-6.07. Section 10.01 of the act also provides this special statute of limitations:
Notwithstanding any other law, no health care liability claim may be commenced unless the action is filed within two years from the occurrence of the breach or tort or from the date the medical or health care treatment that is the subject of the claim or the hospitalization for which the claim is made is completed....
Tex.Rev.Civ.Stat.Ann. art. 4590i, § 10.01.
The doctor’s estate subsequently filed a motion for summary judgment which relied solely upon a limitations defense incident to section 10.01. This motion was supported by deposition testimony of Gatling and one of her doctors, Dr. Carl A. Lewis, as well as by affidavit testimony covering some of her medical records. The medical records established that Dr. Mauk had prescribed Stelazine from December 1980 to June 1982, Prolixin from June 1982 to October 1984; Haldol briefly during October 1984, and Moban from October 1984 to November 1985. The deposition testimony revealed that all these drugs are phenothiaz-ines which can cause tardive dyskinesia. Gatling’s deposition testimony also dis *46 closed that she- was given a neurological examination during October 1984 for a neu-romuscular problem from which she was suffering. The examining neurologist reported to her thereafter that in his opinion she had tardive dyskinesia and that it was associated with the medications prescribed by Dr. Mauk. The doctor’s estate maintains that this summary judgment evidence establishes as a matter of law that Gatling’s malpractice claim is time-barred because she had actually discovered her injury, or reasonably should have discovered it, at least by October 1984. This date is more than two years before Gatling filed suit.
Gatling filed a response which attacked the summary judgment motion on grounds: (1) that while she had pleaded three alternative causes of action, the mov-ant had failed to negate all three; (2) that Dr. Mauk had fraudulently disabled Gatling from pursuing legal action against him by minimizing his involvement in her neuromuscular problem; and (3) that Dr. Mauk’s action in prescribing a phenothiaz-ine after harmful effects therefrom had become apparent effectively extended limitations until that treatment was ended in December 1985. Gatling added to the summary judgment evidence other excerpts from her deposition, these excerpts detailing that she had not become alarmed about Dr. Mauk’s treatment until late in 1985 when she inquired about her neuromuscu-lar condition and Dr. Mauk told her that he would not fully answer her questions. Previously in answer to such questions he had told her the condition was nothing to worry about. Gatling also adopted the movant’s evidence establishing the chronological sequence in which the four phenothiazines were prescribed, in particular the fact that Dr. Mauk had not prescribed Moban until after Gatling’s neurological examination in October 1984.
To justify the trial court’s summary judgment, the doctor’s estate relied upon the holding in
Kimball v. Brothers,
The function of a summary judgment is not to deprive a litigant of the right to a full hearing on the merits of any real issues of fact, but to eliminate patently unmeritorious claims and untenable defenses.
Gulbenkian v. Penn,
(1) The movant for summary judgment has the burden of showing that there is no genuine issue of material fact and that it is entitled to judgment as a matter of law.
(2) In deciding whether there is a disputed material fact issue precluding summary judgment, evidence favorable to the nonmovant must be taken as true.
(3) Every reasonable inference must be indulged in favor of the nonmovant and doubts resolved in its favor.
The summary judgment evidence conclusively establishes that in October 1984 Gatling was told by a neurologist, whom she had consulted for the purpose, that the painful neuromuscular condition from which she suffered was called “tardive dys-kinesia” and that it was “associated” with drugs prescribed by Dr. Mauk. In our opinion, however, it cannot be concluded from what Gatling was told after this neurological examination that she was placed thereby on notice that she was the victim of medical malpractice by Dr. Mauk. Nothing in the disclosures related by her neurologist would make Gatling aware of those essential elements she was required to establish when asserting a cause of action under sections 6.01-6.07 of article 4590i. As part of such limited cause of action, Gatling was obliged to show that Dr. Mauk knew or should have known that the phe-nothiazine-type drugs he was prescribing for her have the side effects in some instances of causing tardive dyskinesia and that Dr. Mauk violated a duty he owed to her as his patient to alert her to this risk before prescribing these drugs. The diag-
nosis made by her neurologist does not go so far. While the diagnosis may have suggested that the drug manufacturer was liable for Gatling’s injury, it would not necessarily have suggested that Dr. Mauk was also liable because of the circumstanc: es under which he prescribed the drugs. Furthermore, limitations does not begin to run until the claimant discovers not only the injury but also its cause in fact.
See Corder v. A.H. Robins Co., Inc.,
Because the errors just sustained are dispositive of the appeal, we do not address Gatling’s first point of error which deals with the applicable statute of limitations in cases involving continuing torts.
The judgment of the trial court is reversed, and the cause is remanded for further proceedings.
