Trimethoprim/sulfamethoxazole (TMP/SMX), also known as co-trimoxazole among other names, is an antibiotic used to treat a variety of bacterial infections. It consists of one part trimethoprim to five parts sulfamethoxazole. It is used for urinary tract infections, MRSA skin infections, travelers' diarrhea, respiratory tract infections, and cholera, among others. It may be used both to treat and prevent pneumocystis pneumonia in people with HIV/AIDS.
1 - Reaction at site of tick bite can last days, even weeks. 2  Lyme rash occurs at the site of the tick bite in 80% of people with early Lyme disease. 3  Incubation period from tick bite to rash is 3-30 days (usually 3-10 days).f the rash is Lyme, it will get bigger over days or weeks and will not fade over the next few days. Only 2% of tick bites result in Lyme disease. A Lyme rash occurs at the site of the tick bite in 80% of people who have early Lyme disease.
The symptoms of Lyme disease are often described as happening in three stages. Not everyone experiences all of these stages, though: A circular rash at the site of the tick bite, typically within 1-2 weeks of infection, often is the first sign of infection.