Differential Diagnosis for Sore Throat, Facial Flushing, Itchy Skin, Recurring Cyst/Boil, and History of MRSA
- Single Most Likely Diagnosis
- MRSA Infection: Given the patient's history of MRSA and the presence of a recurring cyst/boil, it is likely that the current symptoms are related to another MRSA infection. The sore throat could be a sign of a systemic infection, while the facial flushing and itchy skin could be indicative of an allergic reaction or a toxin-mediated response.
- Other Likely Diagnoses
- Cellulitis: The combination of a sore throat, facial flushing, and itchy skin, along with a history of MRSA, could suggest cellulitis, a bacterial skin infection that can cause redness, swelling, and warmth of the skin.
- Folliculitis: The recurring cyst/boil could be a sign of folliculitis, an inflammation of the hair follicles, which can be caused by MRSA.
- Allergic Contact Dermatitis: The itchy skin and facial flushing could be indicative of an allergic reaction, such as allergic contact dermatitis, which can be caused by exposure to certain substances.
- Do Not Miss Diagnoses
- Endocarditis: Although less likely, endocarditis (an infection of the heart valves) is a potentially life-threatening condition that can cause systemic symptoms, including sore throat and fever. A history of MRSA increases the risk of endocarditis.
- Toxic Shock Syndrome: This is a rare but life-threatening condition caused by bacterial toxins, which can cause symptoms such as sore throat, fever, and rash. A history of MRSA and the presence of a recurring cyst/boil increase the risk of toxic shock syndrome.
- Rare Diagnoses
- Erythema Multiforme: A skin condition characterized by target-like lesions, which can be caused by infections, including MRSA.
- Sweet Syndrome: A rare condition characterized by fever, leukocytosis, and tender, erythematous skin lesions, which can be associated with infections, including MRSA.