| HA | Headache |
| Hallux |
Great toe
Toe
|
|
Hamstring
Hamstrings
| Posterior muscle group at thigh level |
| Hand foot and mouth disease | Enteroviral vesicular stomatitis with exanthem |
|
Hansen disease
Hansens disease
| Leprosy |
| HbS | Sickle, Hb-SS |
| Hb-S | Sickle, Hb-S, Hb-SS |
| Head lice | Pediculus humanus capitis |
| Hemophilia | Hereditary factor VIII deficiency Hereditary factor IX deficiency Hereditary factor XI deficiency |
| Herpes labialis | Herpesviral vesicular dermatitis |
| Herpes zoster | Zoster |
| HF |
Heart failure
Left ventricular failure
|
| HFMD | Enteroviral vesicular stomatitis with exanthem |
| High BP | Hypertension |
| HIV | Human immunodeficiency virus |
| HTN | Hypertension |
| Hx | History |
| Hydatidiform mole | Neoplasm of uncertain behavior of placenta Molar pregnancy |
| Hyperkalemia | Potassium |
| Hypernatremia | Sodium |
| Hyperthyroidism | Thyrotoxicosis |
| Hypokalemia | Potassium |
| Hyponatremia | Sodium |
| IBS | Irritable bowel syndrome |
| IC | Interstitial cystitis |
| ICD | Implantable cardiac defibrillator |
| Idiopathic intracranial hypertension | Benign intracranial hypertension |
| Idiopathic thrombocytopenia | Immune thrombocytopenic purpura |
| Impotence | Erectile disorder |
| Indigestion | Functional dyspepsia |
| Intestinal bypass |
Bariatric
Intestinal bypass
|
| ITP | Immune thrombocytopenic purpura |
|
IUC
IUD
| Intrauterine contraceptive device |
| IUGR | Fetal growth retardation |
| Jock itch | Tinea cruris |
| JRA | Juvenile rheumatoid arthritis |
| Kidney | Renal |
|
Kidney stone
Kidney stones
|
Calculus of kidney
Calculus of ureter
Urinary calculus
|
|
L spine
L-spine
|
Lumbar
Lumbo
|
| Labialis | Herpesviral vesicular dermatitis |
| Labyrinthine hydrops | Menieres disease |
| Lac | Laceration |
|
Lacrimal gland calculus
Lacrimal gland stone
Lacrimal stone
| Dacryolith |
| Lacrimal gland ductal cysts | Dacryops |
| Lap band |
Bariatric
Gastric band
|
| LBBB | Left bundle branch block |
| LBW | Low birth weight |
| LCL | Lateral collateral ligament |
|
LFT
LFTs
| Liver function studies |
| Leukocytosis | Elevated white blood cell count |
| Leukopenia | Decreased white blood cell count |
| LGV | Chlamydial lymphogranuloma (venereum) |
| Lice |
Pediculus humanus capitis
Pediculus humanus corporis
Phthiriasis
|
| Lisp | Phonological disorder |
| Lithiasis |
Calculus
Sialolithiasis
Cholelithiasis
Dacryolith
|
| LSD | Hallucinogen |
| Lou Gehrigs Disease | Amyotrophic lateral sclerosis |
| Lymphogranuloma venereum | Chlamydial lymphogranuloma (venereum) |
|
Mad cow
Mad cow disease
| Creutzfeldt-Jakob disease |
| Marijuana | Cannabis |
| MCL | Medial collateral ligament |
| MDD | Major depressive disorder |
|
Meibomian
Meibomian gland inflammation
| Hordeolum internum |
| Meningococcemia with adrenal hemorrhage | Waterhouse-Friderichsen syndrome |
| Menometrorrhagia | Excessive and frequent menstruation |
| Menorrhagia | Excessive menstruation |
| Metrorrhagia | Excessive and frequent menstruation |
| MI | Myocardial infarction |
| Molar pregnancy | Hydatidiform mole Neoplasm of uncertain behavior of placenta |
| Mobitz | Atrioventrical block, second degree |
| Mole | Nevus, nevi |
| Moniliasis | Candidiasis, candidal |
|
Morton
Morton neuroma
Mortons
Mortons neuroma
| Lesion of plantar nerve |
| MRSA | Methicillin resistant Staphylococcus aureus |
| MS | Multiple sclerosis |
| MSSA | Methicillin susceptible Staphylococcus aureus |
| Murray valley encephalitis | Australian encephalitis |
| MVP | Mitral (valve) prolapse |
Natal tooth Natal teeth | Disturbances in tooth eruption |
| NDLO | Nasolacrimal duct |
Necrotizing ulcerative gingivitis Necrotizing ulcerative gingivostomatitis | Vincent |
| Neisseria Gonorrhoeae |
Gonococcal
Gonorrhea
|
Neonatal tooth Neonatal teeth | Disturbances in tooth eruption |
| Nephrolithiasis |
Calculus of kidney
Calculus of ureter
Urinary calculus
|
| Neuroma |
Benign neoplasm of nerve
Lesion of plantar nerve
Lesion of nerve
Mononeuropathy
|
| OA | Osteoarthritis |
| OCD | Obsessive compulsive disorder |
| OD | Right eye |
| ODD | Oppositional defiant disorder |
| Onychomycosis | Tinea unguium |
| Ophthalmia neonatorum | Gonococcal conjunctivitis Neonatal conjunctivitis |
| Oral herpes |
Herpesviral vesicular dermatitis
Herpesviral gingivostomatitis and pharyngotonsillitis
|
| Ornithosis | Chlamydia psittaci infections |
| OS | Left eye |
| OM | Otitis media |
| OME | Otitis media effusion |
| Oral candidiasis |
Candidal stomatitis
Candidal chelitis
|
| Oral herpes |
Herpesviral vesicular dermatitis
Herpesviral gingivostomatitis and pharyngotonsillitis
|
| Oral thrush | Candidal stomatitis |
| OS | Left eye |
| OSA | Obstructive sleep apnea |
| Otitis externa | Swimmers ear |
| OU | Bilateral eye |