1 An older antibiotic, but still in use, and effective where you might be allergic to the penicillins. However, it may cause various types of stomach upset, and so is usually kept in reserve.  Clindamycin is the 500lb. gorilla of tooth abscess antibiotics used in dentistry.
A communicable disease is an illness transmitted through contact with microorganisms. People, animals, food, surfaces, and air can all be carriers of the microorganisms that pass infectious illnesses from one host to the next.
Lupus (systemic lupus erythematosus or SLE) is a chronic autoimmune connective tissue disease in which the body harms its own tissues and can lead to inflammation and damage to joints, skin, kidneys, liver, heart, lungs, blood vessels, and the nervous system.