The exact cause of lichen planus is unknown. It may be related to an allergic or immune reaction. Risks for the condition include: Exposure to medicines, dyes, and other chemicals (including gold, antibiotics, arsenic, iodides, chloroquine, quinacrine, quinide, phenothiazines, and diuretics)
Closest Airport to Killeen, TX. The closest airport is Robert Gray Army Air Field Airport (GRK). Distance from Robert Gray Army Air Field Airport to Killeen is 11,1 kilometers (6,9 miles).
The distance between Waco, Texas and Ki â¦ lleen, Texas is 62.6 miles. The resulting travel time is 1 hour and 10 minutes. This is the route: Take I-35 SOUTH to U.S. 190 WEST to KILLEEN and FT. HOOD at EXIT 293A.Take U.S. 190 WEST to Killeen.