Commonest list and Important pairs
| Cough | Post nasal drip |
| Encephalitis | HSV1 |
| Osteomyelitis | S. aureus |
| Otitis externa | Pseudomonas |
| Malignant otitis externa | Pseudomonas |
| Keratitis with contact lens | Acanthamoeba |
| Typhilitis | Clostridium septicum |
| Endocarditis (spontaneous) | Streptococcus viridans |
| Endocarditis (artificial valve) | Staph. epidermidis |
| Multilobar pneumonia | S. pneumo |
| Portal Hypertension(Worldwide) | Schistosomiasis |
| Renal failure | Hypertension |
| Cellulitis | Streptococcus |
| Furuncle | Staph. aureus |
| Gas gangrene | Clostridium perferingens |
| Death(age 25-40) | AIDS |
| Death | IHD (Ischemic heart disease) |
| Gall stone | Cholesterol |
| Renal stone | Calcium |
| Headache | Migraine |
| Thunderclap headache | Sub arachnoid hemorrhage |
| Laryngitis | Viral |
| Osteomyelitis | Staphylococcus aureus |
| Addison's disease | Auto immune |
| Epistaxis | Mechanical trauma |
| Familial mediterranean fever | Colchicine |
| Total Parenteral nutrition | Malassezia furfur fungemia due to IV lipids |
| Clostridium septicum & enterococcus bovis | Do colonoscopy to look for Ca colon |
| Streptococcus pneumoniae pneumonia | Herpes simplex labialis |
| Guttate psoriasis | Streptococcal infections in children |
| HLA B27 | Ankylosing spondylitis, Reiter's syndrome |
| 12th rib fracture in MVA | Splenic injury |
| Mee's lines & raindrop pigmentation with sensory neuropathy | Arsenic poisoning |
| Endocarditis with Strep. bovis or C.septicum | Look for Ca colon as cause |
| Cystic fibrosis | Pseudomonas cepacia |
| Cystic fibrosis gene | Delta F 508 on Chromosome 7 |
| Absent Vas deferens | Cystic fibrosis |
| GI Bleed in Cirrhotic | Gastritis is commonest but varices most dangerous |
| Commonest leukemia | CLL |
| Spontaneous bacterial peritonitis | E.coli > Pneumococcus |
| Seafood - shock within a few hours | Vibrio vulnificus |
| Ptosis with miosis | Horners syndrome |
| Ptosis with mydriasis | 3rd nerve palsy |
| Over-aggressive treatment of hyponatremia | Central pontine myelinolysis(Coma) |
| Hyperthyroidism in elderly | Apathetic hyperthyroidism |
| Weakness with absent reflexes | Guillian barre syndrome |
| Cannot release hand after handshake | Myotonic dystrophy |
| Generalized fasciculations | Motor neuron disease |
| Pendular reflexes | Cerebellar lesion |
| Gram negative diplococci | Neisseria |
| Gram positive bacilli | Clostridium, Nocardia, Bacillus, |
| Test to detect early HIV | Viral load (PCR) |
| Wasting of intrinsic muscles of the hands | Syringomyelia |