Sulfonamide antibiotics that can cause a reaction. Antibiotics containing chemicals called sulfonamides can trigger a reaction if you have a sulfa allergy. These antibiotics include combination drugs: 1  Sulfamethoxazole-trimethoprim (Septra, Bactrim).
4. Staphylococcus aureus. Staphylococcus aureus is a common type of skin bacterium that may be found in areas such as the skin, nasal cavities, and respiratory tract. While some staph strains are harmless, others such as methicillin-resistant Staphylococcus aureus (MRSA) , can cause serious health issues.. Staphylococcus aureus. Staphylococcus aureus is a common type of skin bacterium that may be found in areas such as the skin, nasal cavities, and respiratory tract. While some staph strains are harmless, others such as methicillin-resistant Staphylococcus aureus (MRSA) , can cause serious health issues.
Bacterial Skin Infections. Bacterial skin infections are usually caused by gram-positive strains of Staphylococcus and Streptococcus or other organisms. Common bacterial skin infections include: 1  Cellulitis causes a painful, red infection that is usually warm to the touch. Chlamydia is an infection in men and women caused by an organism called Chlamydia trachomatis. 2  Chlamydia increases the risk of pelvic inflammatory disease (PID) in women. 3  Gonorrhea, also known as clap and the drip, is caused by Neisseria gonorrhoeae. 4  Men and women can be infected.