In this task, you are given a question and answer options for that question. Using this information, you have to classify each text into different topics: medicine, nursery, psychology, chemistry, pharmacology, biology.

Question: A 24-year-old student who, after three weeks of a cold in the upper respiratory tract, visited the doctor for a sensation of numbness in his hands and loss of limb strength in recent days. The picture was preceded by low back pain. In the exploration, it stands out, decrease of asymmetric muscular force in upper and lower extremities, loss of osteotendinous reflexes. In this patient the most likely diagnosis is: 
 Options:  <0> Myasthenia gravis. <1> First outbreak of multiple sclerosis. <2> Acute inflammatory demyelinating polyradiculopathy. <3> Dermatomyositis <4> Amyotrophic Lateral Sclerosis.
medicine

Question: 35-year-old woman on hormonal treatment for infertility. He went to the emergency department due to constitutional syndrome and paresthesias in the left side of the body. In blood tests, Hb 7.5 g / dL, reticulocytes 10% (0.52%), platelets 5,000 / uL, normal leukocytes, LDH 1,200 IU / L, direct negative Coombs test, undetectable haptoglobin are detected. Morphology of peripheral blood with abundant schistocytes. Normal coagulation tests. What is the diagnostic suspicion and the most appropriate treatment? 
 Options:  <0> Autoimmune hemolytic anemia. Start steroids. <1> Von Willebrand disease. Administration of desmopressin. <2> Thrombocytopenic purpura. Start steroids and platelet transfusion. <3> Evans syndrome. Start steroids. <4> Thrombotic thrombocytopenic purpura. Treatment with plasmapheresis.
medicine

Question: The following metals can be determined by complexometric or chelometric titration: 
 Options:  <0> All without exception. <1> All except transition metals. <2> All except lithium, sodium and potassium. <3> All except alkaline earth metals. <4> All except gold and silver.

pharmacology