Wisdom tooth Other area Helen Tjia
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Assoc Prof Tjia Helen

Assoc Prof Tjia Helen

MBBS (Singapore), MMed (Internal Medicine), FRCS (Edinburgh)

Senior Consultant

National Neuroscience Institute

Specialty: Neurology

Sub-specialties: General Neurology, Headache

Conditions Treated by this Doctor:
Headache in Children, Headaches.

Clinical Appointments

  • Senior Consultant Department of Neurology National Neuroscience InstituteNational Neuroscience Institute


Dr Helen Tjia is a clinical neurologist seeing mainly outpatient general neurology headache, stroke and movement disorders. Dr Tjia also have teaching sessions at the NUS Yong Loo Lin School of Medicine, Duke-NUS Medical School and Lee Kong Chian School of Medicine.


​FRCS (Edinburgh), 2004

MMed (Singapore), 1978

MBBS (Singapore), 1975

Professional Appointments and Committee Memberships

  • Senior Consultant, Department of Neurology, National Neuroscience Institute
  • ​Clinical Associate Professor, NUS Yong Loo Lin School of Medicine
  • Adjunct Associate Professor, Duke-NUS Medical School
  • Clinical Teacher, Lee Kong Chian School of Medicine
  • Member, FAMS
  • Member, Mentorship Committee


  • ​Singapore Health Quality Award, 2014, 2015, 2016, 2017
  • National Day Award Long Service Medal, 2011

Research Interests


  • Cryptococcal Meningitis A review of 25 cases. Tjia T L, Yeow Y K, Tan C B. Journal of Neurology, Neurosurgery and Psychiatry 1985 Vol.  48:853-858
  • The Neurological Manifestations of Nipah Virus Encephalitis; A Novel Paramyxovirus, Lee KE, Umapathi T, CB Tan, Tjia TL, Lee WL. Ann Neurol 1999;46:428-32
  • Elimination of Phenytoin in Toxic Overdose. Chua HC, Venketasubramanian N, Tjia TL, Chan SP
    Clinical Neurology and Neurosurgery 2000;102:6-8
  • Insight into the Three-dimensional Structure of the Oculomotor Nuclear Complex and Fascicles, T Umapathi, WK Siow, RP Mukkam, SC Loong, CB Tan, Tjia TL, WL Nowinski, Journal of Neuro-opthalmology 20(2):138-144,2000
  • Bilateral Substantia nigra changes on MRI in a patient with encephalitis lethargica. Neurology 1999;53:1860-2, Loh NK, Sitoh YY, Lee SH, Tjia TL.
  • Tongue deviation in acute ischaemic stroke: A study of supranuclear twelfth cranial nerve palsy in 300 stroke patient, Umapathi T, Venketasubramanian N, Leck KJ, Tan CB, Lee WL, Tjia TL, Cerebrovascular Diseases 2000;10:462-5
  • Hyperhomocystinemia and Risk of Ischemic Stroke Among Young Asian Adults. Nigel Tan, Ventketasubramanian, Seang Mei Saw, Helen T L Tjia Stroke 2002; 33 1956-1962
  • Myotonic dystrophy and hyperthyroidism, Tjia TL, Yeow YK, Nei L P. Singapore Medical Journal 1983 24:309-311
  • Transient global Amnesia, Tay K F, Yeow Y K, Chee Y C, Tjia T L, Singapore Medical Journal, 1986:26:428-431
  • Azathioprine in the Treatment of Myasthenia Gravis, H Tjia, CB Tan, Muscle and Nerve, 1994: Supp 1:S191
  • Early and predominant muscle involvement in motor neurone disease. Wang Y T, Yeow Y K, Tjia T L, Poh S C. Annual Academy of Medicine Singapore 1985 14: 515-517
  • Nasopharyngeal Ca with autonomic epilepsy Wang Y T, Chee Y C, Tjia T L, Poh S C, Singapore Medical Journal 1985 26:389-390
  • Diagnosis of tuberculous meningitis using the polymerase chain reaction. An evaluation of 3 primers, BW Lee, CB Tan, Tjia TL, HK Yap, JAMA Tan and CC Seah, Journal of Neurological Science, 123(1994),173-179
  • DNA Amplification of the CTG Repeats Sequence in the Molecular Characterisation of Myotonic Dystrophy, CB Tan, LK Poh, HK Ong, JI Tan, Tjia TL, BW Lee. Neurol J.Southeast Asia 1997; 2:177-83
  • Cellular Immunity in Apparently Immuno-Competent Patients with Torula Meningitis. CB Tan, BW Lee, HK Yap, H Tjia and CC Seah, The Canadian Journal of Neurological Science, Vol 20, Supp 4, Page S133. August 1993
  • Acute Sympathotonic Orthostatic Hypotension. Lim S H, Tan C B, Tjia T L.  Annals of Academy of Medicine 90:404-406.
  • Mutism and Dysphagia of Acute Onset due to Bilateral Capsular Infarction. Chee MWL, Tan C B, Tjia T L, Annuals Academy of Medicine 1990: 19,393-395
  • Nuclear Third Nerve Palsy And Somnolence to Stroke,  Chee MWL, Tan C B, Tjia T L, Annuals Academy Medicine Singapore 1990:19. 382-384
  • Central Nervous System Complications of Chicken Pox, Tan C B, Chee MWL, Lee B W and Tjia T L. Singapore Medical Journal 1985 Vol.26:386-388
  • Central Pontine Myelinolysis with computerised tomography confirmation - a case report Yeow Y K, Tjia T L. Singapore  Medical Journal 1984 25:57-58
  • Ischemic Stroke from Cerebral Embolism  in Cephalic Fibromuscular Dysplasia. Tan AKY, Venketasubramanian N, Tan CB, Lee SH, Tjia TL. Annals Academy Medicine Singapore 1995; 24:891-4
  • Paroxysmal Kinesigenic Choreothetosis in Singapore and its relationship to epilepsy. L.Tan, A. Tan, Tjia TL. Clinical Neurology and Neurosurgery 1998. 100:187-192.
  • Profile of Hospitalised Patients with Parkinson’s Disease. LCS Tan, AKY Tan, Tjia TL, Annals Academy of Medicine, August 1998.
  • Crectzfeld Jackob Disease. Presenting with Visual Blurring Diplopia and Visual Loss: Heidenhain’s Variant,Lee KE, NK Loh, AKY Tan, WL Lee, Tjia TL. Annals Academy of Medicine 1998: 27: 854-6.
  • Radiation Induced Neurological complication of nasopharyngeal carcinoma. LCS Tan, Y Y Sitoh, Tjia TL, Neurol J.Southeast Asia 1999 : 4:83-88
  • Multiple Sclerosis: A Retrospective Review from Singapore. U Thirugnanam, C B Tan, Tjia TL, Neurol J.Southeast Asia 1997;2:171-75
  • Refractory seizures in a young army cohort. Ann Acad Singapore 1997;26(4):471-4,Loh NK, Lee WL, Yew WW, Tjia TL.
  • Epidemiologic study of epilepsy in young Singaporean men. Epilepsia 1999;40(10):1384-7, Loh NK, Lee WL, Yee WW, Tjia TL.
  • Paradoxical Seizures in Phenytoin in Toxicity. Chua Hoe Chin, Venketasubramanian, Tan CB, Tjia TL,
    Singapore Medical Journal 1999;40:276-7
  • Palatal Myoclonus – a Case Report. Chua HC, Tan AKY, Venketasubramanian N, Tan CB, Tjia TL. Singapore Medical Journal 1999;40593-5
  • Myasthenia Gravis in Singapore, Au Wing Lok, Asha Das, Helen T L Tjia, Neurol. J. Southeast Asia 2003 j 8; 35-40
  • Oral Sumatriptan 100mg in the Treatment of Acute Migraine. A Multicentre Open Study of 70 patients, BKC Ong, YK Yeow, CB Tan and TL Tjia. The Canadian Journal of Neurological Science, Vol 20, Supp 4, Page S35, August 1993
  • HLA Association in Chinese Patients with Myasthenia Gravis. CB Tan, SH Chan, YN Lin, GB Wee and TL Tjia, The Canadian Journal of Neurological Science, Vol 20, Supp4, Page S99, August 1993
  • Proceedings of 2nd Annual Scientific Meeting Tan Tock Seng Hospital.
    • Vascular factor in cervical myelopathy: Evidence from central motor conduction studies, CB Tan, A Tan and H Tjia
    • Non-traumatic brachial plexopathy, KJ Goh, CB Tan and H Tjia
  • Proceedings of the Singapore Malaysia Medical Congress, Singapore 1994
    • Central motor conduction abnormality in cervical myelopathy, CB Tan, A Tan and H Tjia
    • Sciatic Neuropathy, a retrospective study, KJ Goh, CB Tan and H Tjia
    • Fibromuscular dysplasia in stroke, A Tan, CB Tan and H Tjia
    • Ocular Myasthenia and respiratory muscular study, SH Lee, H Tjia
    • The Young Stroke Patient - The Tan Tock Seng Hospital Stroke Data Bank, Ramani, Balaji, A Tan, KJ Goh and H Tjia
  • Proceedings of the Annual Scientific Meeting Clinical Neuroscience Society 1994.
    • Benign motor neurone disease, A Tan, CB Tan and H Tjia
    • Traumatic brachial plexopathy, KJ Goh, CB Tan and H Tjia
  • T Cell Activation Markers and Disease Severity in Guillain Barre Syndrome. BW Lee CB Tan, HK Yap, CC Seah and T L Tjia, The Canadian Journal of Neurological Science, Vol 20, Supp 4, Page S103, August 1993
  • Anti-GM1 Ganglioside antibody in Guillain Barre Syndrome. CB Tan, BW Lee, HK Yap, CC Seah, H Tjia, Muscle and Nerve, 1994:Supp 1:S223
  • The Young Stroke Patient - The Tan Tock Seng Hospital Stroke Data Bank. Venketasubramanian N, Sadasivan B, Tan AKY, Goh KJ, Tjia TL. Annals of the Academy of Medicine, Singapore 1995;24:A298. 28th Singapore-Malaysia Congress of Medicine,Singapore (1994)
  • Central motor conduction in Lacunar Strokes, CB Tan, A Tan and Tjia TL, Neurology, Supp, April 1994
  • Peripheral Neuropathy in Systemic Lupus Erhthematosus, CB Tan, HH Chong, ML Boey, PH Feng, H Tjia, Electroenceph, Clin. Neurophysiol. 1997: Vol 4, S139
  • Electrodiagnosis in Acute Guillian Barre Syndrome, A study of 66 Consecutive Cases, H Tjia, CB Tan
    Electroenceph, Clin. Neurophysiol, 1997 Vol 103:1:90
  • Preservation of N20 in Striatocapsular and Internal Watershed Infarct from Middle, Cerebral Artery Disease, CB Tan, H Tjia, Electroenceph. Clin. Neurophysiol.1997, Vol 102:1:69
  • Central Motor Conduction in Cervical Myelopathy, CB Tan, H Tjia, Clinical Neurophysiology. Sept 1999 Vol 110 Suppl 1, S223
  • Common carotid artery occlusion – importance of the patent internal carotid artery, Lee KE, Venketasubramanian N, Tjia TL, Cerebrovascular Diseases, 2000;10(Suppl 2):48.
  • Total care in Stroke Tjia T L. The Singapore Family Physician, Vol.x VI. No.2 65-67. 1991.
  • Calcium Antagonists and Migraine. Tjia T L. Medical Progress, July 1990.
  • Memory Disorders, Tjia TL, Preventing Cognitive and Neurosensory Disorders No. 8. A medical service from has Laboratories Servier. Pgs 1-2.

Research Trials