This is likely cognate to the popular Welsh girls' name Carys. The name is also that of an island in the Inner Hebrides island group, Scotland; Cara Island lying just off the southern tip of the Isle of Gigha. In Turkey the word Kara means dark, which may or may not be related to the Gaelic Ciara of the same meaning.
MRSA boils are a physical symptom that manifests in the presence of methicillin-resistant Staphylococcus aureus (MRSA) infection. Considered a form of dermal staph infection, MRSA boils present as progressive skin sores that form a boil of contained infection, which without proper treatment can lead to abscess formation.
MRSA causes recurrent skin boils and is resistant to many antibiotics. MRSA is also linked to blood infections and severe skin infections. Boils can also be caused by a toxic condition in the blood stream. A person's blood can become toxic due to an unhealthy lifestyle or a poor diet. Boils generally appear when a person is in an unstable and devitalized condition.