This document provides definitions for common medical abbreviations and terms used in prescriptions and documenting patient care. It defines abbreviations for treatments, dosages, routes of administration, measurements, and other terms commonly seen in medical records. Some abbreviations defined include Rx for treatment, BID for twice a day, PO for by mouth, Mg for milligrams, and PRN for as needed. The document aims to help those reading medical documents understand the terminology through explaining over 50 common medical abbreviations and shorthands.

1. COMMON MEDICAL KNOWLEDGE 1
COMMON MEDICAL KNOWLEDGE
BY NIKHIL MAHESHWARI
> *Rx* = Treatment
> *Hx* = History
> *Dx* = Diagnosis
> *q* = Every
> *qd* = Every day
> *qod* = Every other day
> *qh* = Every Hour
> *S* = without
> *SS* = One & half
> *C* = With
> *SOS* = If needed
> *AC* = Before Meals
> *PC* = After meals

2. COMMON MEDICAL KNOWLEDGE 2
> *BID* = Twice a Day
> *TID* = Thrice a Day
> *QID* = Four times a day
> *OD* = Once a Day
> *BT* = Bed Time
> *hs* = Bed Time
> *BBF* = Before Breakfast
> *BD* = Before Dinner
> *Tw* = Twice a week
> *SQ* = sub cutaneous
> *IM* = Intramuscular
> *ID* = Intradermal
> *IV* = Intravenous
> *Q4H* = (every 4 hours)
> *QOD* = (every other day)
> *HS* = (at bedtime)
> *PRN* = (as needed)
> *PO or "per os"* (by mouth)
> *Mg* = (milligrams)
> *Mcg/ug* = (micrograms)
> *G or Gm* = (grams)
> *1TSF* (Teaspoon) = 5 ml
> *1 Tablespoonful* =15ml
~ *DDx* =differential Diagnosis
Tx* =Treatment
RTx* =Radiotherapy
CTx* =Chemotherapy

3. COMMON MEDICAL KNOWLEDGE 3
R/O* =rule out
s.p* =status post
PMH(x)* =post medical history
Px* =Prognosis
Ix* =Indication
CIx* =contraindication
Bx* =biopsy
Cx* =complication...