Macular degenerationMacular holeMad cow diseaseMagnesium testMagnetic resonance imaging scanMalariaMale breast cancerMale contraceptive pillMale thrushMale-pattern hair lossMallet fingerMalnutritionMarfan syndromeMarine stingsMastalgiaMastectomyMastitisMastocytosisMastoiditisMEMeaslesMedial tibial stress syndromMedian nerve compressionMedical researchMedically unexplained symptomsMedication - problems swallowing pillsMedicines informationMedium-chain acyl-CoA dehydrogenase deficiency (MCADD)Meibomian cystMelanomaMemory lossMénière’s diseaseMeningitisMenopauseMenorrhagiaMesotheliomaMetabolic syndromeMetatarsalgiaMethicillin-resistant staphylococcus aureusMicrodermabrasionMigraineMiliariaMilk intoleranceMini-strokeMinimally conscious stateMiscarriageMisophoniaMitral valve problems and operationsMobile phone safetyMolar pregnancyMolesMolluscum contagiosumMongolian spotsMononucleosisMorton's neuromaMotion sicknessMotor neurone diseaseMountain sicknessMouth cancerMouth ulcersMRI scanMRSA infectionMSMucositisMuehrcke's linesMultiple myelomaMultiple sclerosisMultiple system atrophyMumpsMunchausen's syndrome by proxyMunchausen’s syndromeMuscular dystrophyMutismMyalgic encephalomyelitisMyasthenia gravisMyelodysplastic syndrome (myelodysplasia)Myocardial infarctionMyofascial pain disorderMyopia