A 45 female patient complaint of headache, dizziness, nausea, vomiting from 15 days and double vision from 10 days. Decrease vision from 5 to 6 days, altered sleep and decrease appetite from 4 to 5 days. On examination only bilateral perception of light; bilateral lateral rectus palsy, fundus normal, power of all four limbs and other cranial nerve normal. Her HB 10, TLC, RFT, LFT, chest x-ray PA view, USG abdomen was normal.
CECT head; CT venography; normal CSF; pressure 14: protein 46, Sugar 26 (RBS- 96) 5 cell 100 percent lymphocyte, INDIA ink and cryptococcal antigen CSF, HSV, PCR negative, Cytology for malignant cell: negative RA, CRP, ANA ,ENA profile negative CSF OCB and serum NMO, S.ACE; negative. What should be the probable diagnosis? Suggest further treatment.
