Heat rash or prickly heat develops when blocked sweat ducts trap ... Miliaria rubra (A), one type of heat rash, appears as red clusters of small ... Our general interest e-newsletter keeps you up to date on a wide variety of health topics. Sign up ...Scheduleyourappointmentnowforsafein-personcare.Learnmore:MayoClinicfactsaboutcoronavirusdisease2019(COVID-19)Our COVID-19patient andvisitorguidelines,plustrustedhealthinformationLateston COVID-19vaccination bysite:ArizonapatientvaccinationupdatesArizona,FloridapatientvaccinationupdatesFlorida,RochesterpatientvaccinationupdatesRochesterandMayoClinicHealthSystempatientvaccinationupdatesMCHSSkiptositenavigationSkiptoContentThiscontentdoesnothaveanEnglishversion.ThiscontentdoesnothaveanArabicversion.SearchRequestanAppointmentFindaDoctorFindaJobGiveNowLogintoPatientAccountEnglishEspañolPortuguêsالعربية中文TwitterFacebookPinterestYouTubeEnglishEspañolPortuguêsالعربية中文SearchSearchAllMayoClinicTopicsCareatMayoClinicOverviewAppointmentsDigitalHealthCareLocationsPatient&VisitorGuideInternationalServicesMedicalDepartments&CentersDoctors&MedicalStaffPatientOnlineServicesBilling&InsuranceClinicalTrialsAboutMayoClinicContactUsHealthInformationOverviewDiseases&ConditionsA-ZSymptomsA-ZTests&ProceduresA-ZDrugs&SupplementsA-ZHealthBooksHealthyLivingProgramMayoClinicHealthLetterMayoClinicVoiceAppsHealthyLifestyleFeaturedconditionsBraintumor,breastcancer,coloncancer,congenitalheartdisease,heartarrhythmia.Seemoreconditions.ForMedicalProfessionalsOverviewProviderRelationsCareLinkOnlineReferralsContinuingMedicalEducationMayoClinicLaboratoriesAskMayoExpertVideoCenterJournalsandPublicationsResearchOverviewResearchFacultyLaboratoriesCoreFacilitiesCenters&ProgramsDepartments&DivisionsClinicalTrialsInstitutionalReviewBoardPostdoctoralFellowshipsTrainingGrantProgramsCollegeofMedicineandScienceOverviewMayoClinicGraduateSchoolofBiomedicalSciencesMayoClinicAlixSchoolofMedicineMayoClinicSchoolofContinuousProfessionalDevelopmentMayoClinicSchoolofGraduate