Feeling unusually tired after spending time outdoors is something many people brush off. But when that fatigue lingers and comes with other symptoms, a recent bug bite may be the cause. Tick bites linked to Lyme disease, Rocky Mountain Spotted Fever, and Colorado Tick Fever are among the most common culprits. Mosquito bites that carry West Nile virus can also trigger lasting tiredness. When fatigue follows a bite and comes with fever, rash, or body ...