References

1.      Saper JH. Headache disorders, chronic pain. Medical Clinics of North America 1999; 83 (3): 6633-39

2.      Gopala krishna Gururaj Prevalence and socio demographic correlates of primary headache disorders: results of a population-based survey from Bangalore, India Year : 2014  |  Vol : 58  |  Issue : 4  |  Pg : 241-248

3.      Neuroimaging and other investigations in patients presenting with headache , Callum W. Duncan , Ann Indian Acad Neurol. 2012 Aug; 15(Suppl 1): S23–S32.

4.      Niketh Desouza. Differential diagnosis of headache in adults.International J. of Healthcare and Biomedical Research, Volume: 04, Issue: 04, July 2016, 13-17.

5.      K Madhvi, P Mohan, S Pasupula (2016), Clinical Patterns and Psychiatric Comorbidity of Headache: A Study from Tertiary Hospital, International Journal of Indian Psychology, Volume 3, Issue 3, No. 9, DIP: 18.01.169/20160303, ISBN: 978-1-365-13820-1.

6.      Hari Shankar, Kshitij Raj, Priya Keshari, Pragya Singh.Prevalence of Headache among Adult Population in Urban Varanasi, India. World Academy of Science, Engineering and Technology. International Journal of Medical and Health Sciences Vol: 3, No:5, 2016.

7.      Edlow, J.A.; Panagos, P.D.; Godwin, S.A.; Thomas, T.L.; Decker, W.W. (October 2008)."Clinical policy: Critical issues in the evaluation and management of adult patients presenting to the emergency department with acute headache". Annals of Emergency Medicine. 52 (4): 407–36

8.      Global Burden of Disease Study 2013 Collaborators.“Global, Regionaland National Incidence,Prevalence, and Years Lived with Disability for    301 Acute and Chronic Diseases and Injuries in 188 Countries, 1990-2013: A Systematic Analysis for the Global Burden of Disease Study 2013.” Lancet (London, England) 386, no. 9995 (August 22, 2015): 743–800. doi:10.1016/S0140-6736(15)60692-4.

9.      Vos, Theo, Abraham D. Flaxman, Mohsen Naghavi, Rafael Lozano, Catherine Michaud, MajidEzzati, Kenji Shibuya, et al. “Years Lived with Disability (YLDs) for 1160 Sequelae of 289 Diseases and Injuries 1990-2010: A Systematic Analysis for the Global Burden of Disease Study 2010.” Lancet (London, England) 380, no. 9859 (December 15, 2012): 2163–96. doi:10.1016/S0140-6736(12)61729-2.

10.  American College of Emergency Physicians (2002). "Clinical policy: critical issues in the evaluation and management of patients presenting to the emergency department with acute headache". Ann Emerg Med. 39 (1): 108–22

11.  Tunkel, Allan R., Barry J. Hartman, Sheldon L. Kaplan, Bruce A.    .    Kaufman, Karen L. Roos, W. Michael Scheld, and Richard J. Whitley. “Practice Guidelines for the Management of Bacterial Meningitis.” Clinical Infectious Diseases 39, no. 9 (November 1, 2004): 1267–84. doi:10.1086/425368.

12.  Marchini G, Chemello F, Berzaghi D, Zampieri A. New findings in the diagnosis and treatment of primary angleclosure glaucoma. Prog Brain Res. 2015. 221:191-212.

13.  Leung, Roxanne S., and RohitKatial. “The Diagnosis and Management of Acute and Chronic Sinusitis.” Primary Care 35, no. 1 (March 2008): 11–24, v–vi. doi:10.1016/j.pop.2007.09.002.

14.  Smetana GW. Chapter 9. "Headache." In: Henderson MC, Tierney LM, Jr., Smetana GW. eds. The Patient History: An Evidence-Based Approach to Differential Diagnosis. New York, NY: McGraw-Hill; 2012

15.  International Headache Society. The international classification of headache disorders, 2nd edition. Cephalalgia 2004;24

16.  Linn FH, Rinkel GJ, Algra A, van Gijn J. Headache characteristics in subarachnoid haemorrhage and benign thunderclap headache

17.  Landtblom AM, Fridriksson S, Boivie J, Hillman J, Johansson G, Johansson I. Sudden onset headache: a prospective study of features, incidence and causes. Cephalalgia 2002;22(5):354-60

18.  Landtblom AM, Fridriksson S, Boivie J, Hillman J, Johansson G, Johansson I. Sudden onset headache: a prospective study of features, incidence and causes. Cephalalgia 2002;22(5):354-60

19.  American College for Emergency Physicians (ACEP). Critical issues in .the     . evaluation and management of patients presenting to the emergency    .  department with acute headache. Ann Emerg Med

20.  Al-Shahi R, White PM, Davenport RJ, Lindsay KW. Subarachnoid haemorrhage. BMJ 2006;333(7561):235-40.

21.  US Headache Consortium, Frishberg BM, Rosenberg JH, Matchar DB, McCrory DC, Pietrzak MP, et al. Evidence based guidelines in the primary care setting: neuroimaging in patients with non-acute headache. [cited 16 Oct 2008]

22.  Skau M, Brennum J, Gjerris F, Jensen R. What is new about idiopathic   intracranial hypertension An updated review of mechanism and treatment. Cephalalgia 2006;26(4):384-99.

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