| CASE REPORT |
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| Year : 2015 | Volume
: 6
| Issue : 4 | Page : 228-230 |
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Carbimazole-induced agranulocytosis
Anisha Mohan1, Siby Joseph1, Neeraj Sidharthan2, Dhanya Murali3
1 Department of Pharmacy Practice, Amrita School of Pharmacy, Kochi, Kerala, India
2 Department of Oncology, Amrita Institute of Medical Sciences, Amrita Viswa Vidyapeetam University, AIMS - Kochi Campus, Kochi, Kerala, India
3 Department of Pathology, Amrita Institute of Medical Sciences, Amrita Viswa Vidyapeetam University, AIMS - Kochi Campus, Kochi, Kerala, India
Correspondence Address:
Siby Joseph
Department of Pharmacy Practice, Amrita School of Pharmacy, Amrita ViswaVidyapeetam University, AIMS - Kochi Campus, P.O. Ponekkara, Kochi - 682 041, Kerala
India
 Source of Support: None, Conflict of Interest: None  | Check |
DOI: 10.4103/0976-500X.171881
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A 47 year old lady with hyperthyroidism for past 1½ years was initially on Carbimazole 20 mg orally then changed to 30 mg (during Hysterectomy) but was taking 10 mg for last 1 year. She had intermittent fever with severe B/L bifrontal headache since 3 weeks. Routine investigations showed anaemia, neutropenia, leucopenia and CRP elevation. Peripheral smear showed normocytic normochromic anaemia with Rouleaux formation, leucopenia with 2% atypical cells and mild thrombocytosis. Widal test, RA factor (Rheumatoid factor) test, Ig M (Immunoglobulin M) dengue, Ig M Lepto, TORCH infections (Toxoplasmosis, Other (Syphilis, varicella-zoster, parvovirus B19), Cytomegalovirus and Herpes infections), ANA (Antinuclear antibody) screen cANCA (Cytoplasmic antineutrophil cytoplasmic antibodies) and pANCA (Perinuclear Anti-Neutrophil Cytoplasmic Antibodies) tests were negative. Bone marrow aspiration showed normo to hypercellular marrow with 15% atypical cells and plasma cells. Multiple myeloma workup was done. Carbimazole was withheld. Conclusion: Drug induced agranulocytosis occurs with in 1-2 months of taking the antithyroid medication but onset delayed by 1½ year. De-challenge resulted normalization of blood parameters. |
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