38 Causes of Horizontal Gaze Nystagmus (HGN)

If you have were arrested for a DWI in Texas chances are you took the Horizontal Gaze Nystagmus (HGN). The HGN is the eye test the police administer on the side of the road. There are several causes of the HGN, but if it is present in your eyes the police will assume it is alcohol related. If you have been arrested you need San Antonio DWI lawyer Sean R. Simpson or Manor DWI lawyer David P. Lamb who is familiar with the HGN, and can explain to the jury the various causes of HGN. Contact us right now for a free, confidential case evaluation.

1. Problems With The Inner Ear Labyrinth
2. Irrigating The Ears With Warm Or Cold Water Under Peculiar Weather Conditions
3. Influenza
4. Streptococcus Infection
5. Vertigo
6. Measles
7. Syphilis
8. Arteriosclerosis
9. Muscular Dystrophy
10. Multiple Sclerosis
11. Korchaff’s Syndrome
12. Brain Hemorrhage
13. Epilepsy
14. Hypertension
15. Motion Sickness
16. Sunstroke
17. Eyestrain
18. Eye Muscle Fatigue
19. Glaucoma
20. Changes In Atmospheric Pressure
21. Consumption Of Excessive Amounts Of Caffeine
22. Excessive Exposure To Nicotine
23. Aspirin
24. Circadian Rhythms
25. Acute Trauma To The Head
26. Chronic Trauma To The Head
27. Some Prescription Drugs, Tranquilizers, Pain Medications, Anti-Convulsants
28. Barbiturates
29. Disorders Of The Vestibular Apparatus And Brain Stem
30. Cerebellum Dysfunction
31. Heredity
32. Diet
33. Toxins
34. Exposure To Solvents, PCB’s, Dry-Cleaning Fumes, Carbon Monoxide
35. Extreme Chilling
36. Lesions
37. Continuous Movement Of The Visual Field Past The Eyes
38. Antihistamine Use

See Shultz v. State, 664 A.2d 60, 77 (Md. App. 1995) citing State v. Witte; State v. Clark, State v. Superior Court, and Mark A. Rouleau, Unreliability of the Horizontal Gaze Nystagmus Test, 4 Am.Jur. Proof of Facts 3d 439 (1989); Louise J. Gordy & Roscoe N. Gray, 3A Attorney’s Textbook of Medicine § § 84.63 and 84.64 (1990).
If you have been arrested for a DWI in Texas you need a San Antonio DWI lawyer Sean R. Simpson, or Manor DWI lawyer David P. Lamb who understands the science behind the HGN, and can teach the jury the other causes of HGN beside alcohol. You only have 15 days to protect your driver’s license. Contact us right now for a free, confidential case evaluation! If you like the information on this page, please share it on Facebook, Twitter, or your other social media sites.