What is tick-borne encephalitis (TBE)? Tick-borne encephalitis (TBE) is an illness caused by a virus spread through tick bites. You can also get TBE by eating or drinking unpasteurized dairy products (such as milk and cheese) from infected goats, sheep, or cows. Symptoms include fever, achiness, loss of appetite, headache, nausea, and vomiting.
Tetracycline Side Effects. Common tetracycline side effects may include stomach cramps, diarrhea, skin reactions to sunlight, and fever. There are also some side effects that can indicate something serious. A few of these serious side effects of tetracycline include blurred vision, unusual headaches, and watery diarrhea. Some side effects that occur rarely (in less than 1 percent of people) include allergic reactions, hair loss, and irritation of the esophagus.
As a tetracycline drug, doxycycline may have toxic effects on fetal bone development. According to SideEffects.org, doxycycline is secreted into breast milk, but the extent of absorption by the breastfed infant is not known. Since doxycycline may cause toxic effects on bones, the use of tetracycline drugs in nursing mothers is of concern.