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.
Some pathogenic bacteria cause disease under certain conditions, such entry through the skin via a cut, through sexual activity or an compromised immune function.Streptococcus and Staphylococcus are part of the normal skin microbiota and typically reside on healthy skin or in the nasopharangeal region. These pathogenic species are usually distinct from the usually harmless bacteria of the normal gut flora. 2  But a different strain of the same species may be pathogenic.