A. Infectious

1. Viral: adenovirus, coxsackievirus, mumps, HIV, CMV, EBV
2. Bacterial: Streptococcus, Staphaphylococcus, Mycoplasma, Rickettsia (RMS Fever, Q Fever)
3. Fungal: Aspirgillosis, Blastomycosis, Cadidiasis, Cryptococcosis, Histoplasmosis
4. Spirochetes: Syphilis, Lyme Disease, Relapsing Fever, Leptospirosis
5. Parasitic: Schistosomiasis, Toxoplasmosis, Trichinosis, Trypanosomiasis, Cysticercosis

B. Infiltrative

1. Drug Overdose - Cocaine, TCAs, Phenothiazines, Methysergide, Chloroquine, Lithium
2. Anti-Neoplastic - adriamycin, 5-FU, cyclophosphamide, IL-2, IFN alpha, anti-her2/neu Ab
3. Chemical Poisoning - Lead, hydrocarbons, arsenicals, Carbon Monoxide
4. Envenomation - scorpion, wasp, spider, snake
5. Sarcoidosis
6. Giant Cell Myocarditis

C. Hypersensitivity Drug Reactions

1. Antibiotics: ampicillin, amphotericin, chloramphenicol, penicillin, tetracycline
2. Sulfa Drugs: especially Sulfadiazine, Sulfisoxazole, Sulfonylureas (unusual with TMP-SMX)
3. Anticonvulsants: Carbamazepine, Dilantin, Phenindione
4. Antituberculosis Agents: isoniazid, para-aminosalyicylic acid
5. Diuretics: acetazolamide, chlorthalidone, hydrochlorothiazide (HCTZ), spironolactone
6. Alpha-methyl Dopa (Aldomet®)