Identification

• Migraine sufferers can identify a migraine with focal neurologic signs by the disruptive visual symptoms, which can produce irregular light patterns, or "auras," including flashes of light or zigzag patterns of light, which disrupt normal vision.
  
  

Prevalence

• Better Health Channel reported in 2009 that one in five migraine sufferers experiences focal neurologic signs.
  
  

Non-visual Symptoms

• The Mayo Clinic reports that those experiencing migraines with auras may also have trouble with their speech and feel numbness or tingling.
  
  

Causes

• Migraine triggers vary from person to person and include stress, hunger, fatigue, hormonal changes, certain foods and even bright lights.
  
  

Prevention/Solution

• Avoiding migraine triggers is the best way to avoid migraines with or without focal neurologic signs. The Mayo Clinic lists the following drugs that are used to treat migraines: analgesics, triptans, ergots and anti-nausea drugs.