<prompt> Vitamin deficiency causing circumcorneal vascularization is:BiotinRiboflavinThiamineVitamin D  <response>: Ans. B. RiboflavinPrincipal Clinical Findings of Vitamin MalnutritionNutrientClinical findingThiaminePeripheral nerve damage beriberi or central nervous system lesions Wernicke-Korsakoff syndromeRiboflavinMagenta tongue, angular stomatitis, cheilosis, seborrheic dermatitis, circumcorneal VascularisationNiacinPellagra: pigmented rash of sun-exposed areas photosensitive dermatitis, bright red tongue, diarrhea, apathy, memory loss, disorientation, depressive psychosisVitamin B6 Seborrhea, glossitis, convulsions, neuropathy, depression, confusion, microcytic anemiaFolateMegaloblastic anemia, atrophic glossitis, depression, homocysteineVitamin B12 Pernicious anemia megaloblastic anemia with degeneration of the spinal cord, loss of vibratory and position sense, abnormal gait, dementiaQ, impotence, loss of bladder and bowel control, homocysteine, methyl malonic acidPantothenic AcidPeripheral nerve damage nutritional melalgia or burning foot syndromeVitamin CScurvy: petechiae, ecchymosis, coiled hairs, inflamed and bleeding gums, joint effusion, poor wound healing, fatigueVitamin AXerophthalmia, night blindness, Bitots spots, follicular hyperkeratosis, impaired embryonic development, immune dysfunctionVitamin DRickets: skeletal deformation, rachitic rosary, bowed legs; osteomalaciaVitamin EPeripheral neuropathy, spinocerebellar ataxia, skeletal muscle atrophy, retinopathyVitamin KElevated prothrombin time, bleeding 