Clear (miliaria crystallina),; Red (miliaria rubra),; White/Yellow (miliaria pustulosa),; Deep (miliaria profunda).MENUOnHealthAllergy&AsthmaBeauty&CosmeticsCancerCold&FluDiet&NutritionDiseases&ConditionsFitnessHeartHealthMen'sHealthMentalHealthOralHealthPediatricsSeniorHealthSkinHealthWellnessWomen'sHealthA-ZIndexPrivacyPolicyAboutUsContactUsTermsofUseAdvertisingPolicySkinHealthHeatRash:HowDoYouGetRidofIt?ReviewedByCharlesPatrickDavis,MD,PhDon5/14/2019Yourskinisyourfirstlineofdefensefromtheoutsideworld.Itprotectsyoufrominfections,chemicalexposures,andharmfulultravioletlight.Italsohelpsregulatethetemperatureinsideyourbodybyproducingsweat.Sweatonyourskincomesfromsweatglandslocatedalloveryourbody(exceptinyourfingers,toenails,andearcanals).Thesesmallglandsareregulatedbythebrainandproducesweatthatcomestothesurfaceviaductsonyourskin,whichthenevaporatesandhelpscoolyoudown.Heatrash(pricklyheatormiliaria)isamildinflammationofcloggedsweatducts.Whenthesweatductsareblocked,thesweatcannotcometotheskinsurfacetoevaporateandbecomestrappedundertheskin.Therashischaracterizedbysmall,raisedbumps(likecoarsesandpaper)spreadevenlyacrosssmallpatchesofskin.Therashusuallygoesawayonitsownandresolvesinhourstoafewdays.Thecommonsymptomsofheatrashincludeabumpy,itchy,blister-likerash.Pusmayforminsidefinelesionsonyourskin'ssurface.Yourperspirationmaygetcaughtbeneathyourskintoo,andlatersweatoutthroughflesh-coloredbumps.Youmayfeelaskin-burningsensation,anda"prickly"feeling(likesomethingiscrawlingonskin).Themostcommonbodypartsaffectedareareascommonlyexposedtothesunsuchasthehands,face,neck,andelbowfolds.Affectedareasmayalsoincludeplacescoveredbytightclothingsuchastheabdominalwall,groin,thighcreases,buttocks,andtheareaunderthebreasts.Thefourtypesofheatrash(miliaria)arenamedbythewaytheylookontheskin(visualcharacteristics)andarediscussedonthefollowingslides:Clear(miliariacrystallina),Red(miliariarubra),White/Yellow(miliariapustulosa),Deep(miliariaprofunda).Miliariacrystallina,orclearheatrash,lookslikesma

Heat rash (miliaria rubra), also known as prickly heat, is a rash of small red bumps caused by blockage of the sweat glands. It can be due to high fever, excessive ...SKINCONDITIONSHEALTHTOPICSFORPROFESSIONALSSKINCONDITIONSHOMESKINCONDITIONSHEALTHTOPICSFORPROFESSIONALScaptiongoeshere...ImagesofMiliariaRubraCloseVideoOverviewHeatrash(miliariarubra),alsoknownaspricklyheat,isarashofsmallredbumpscausedbyblockageofthesweatglands.Itcanbeduetohighfever,excessivesweating,orbeingover-bundled.Itiscommonlyseeninhot,humidtropicalclimates.Itcancausediscomfort,itching,and,sometimes,stingingor"prickly"-typepain.Who'satrisk?Heatrashismorecommoninhot,humidtropicalclimates.Someonewhoisnewtosuchanenvironmentisespeciallyvulnerable.Heatrashcanbeduetohighfever,excessivesweating,orbeingover-bundled.Itoccursinindividualsofallraces,althoughtoalesserdegreeinAsians.Infantsarethemostcommonlyaffectedastheyaresubjecttoover-bundlingoutofconcernforheatlossafterbirth.SignsandSymptomsHeatrashcanoccurafterexposuretohotconditions.Therecanbemanysmall,redbumpsalloverthebody.Thebumpsofheatrashusuallyoccurinhighestconcentrationincoveredareaswherethereisalotoffriction,suchastheneck,chest,andbodyfolds.Theface,palms,andsolesaregenerallynotaffectedbyheatrash.Therashcancauseintenseitchingandstinging,whichcanbecomeworsenedbyheat.Theindividualmayfeelfatiguedandbecomeintolerantofheatbecauseoflittleornosweatingattheaffectedareas.Self-CareGuidelinesPreventionandtreatmentofheatrashconsistofcontrollingheatandhumidity.Acetaminophenoribuprofencanhelptoreducefever,whichcanbeacausativeagentinthedevelopmentoftherash.Removeanyocclusiveclothing,limitactivity,andseekairconditioningoranycoolerenvironment.Coolcompressescanalsohelpwiththediscomfort.Heatrashusuallyresolvesoncepeoplemovetoacoolerenvironment.Makesuretodrinklotsoffluids.WhentoSeekMedicalCareThemostcommoncomplicationsfromheatrashincludesecondaryinfectionfromscratchingandheatexhaustion.Althoughuncommon,infectedareasduetobreaksintheskincausedbyscratchingmayneedantibio