This can be made worse by heat and high humidity. Heat rash or prickly heat is caused by a blockage and inflammation of your sweat ducts. There are several different types of skin rashes here are some that are more likely to happen during summer. These rashes can be caused by:Īllergies and pre-existing skin conditions can also get worse during summer.īabies are especially prone to skin rashes because their skin is often more sensitive. Related information on Australian websitesĭuring summer, many Australians participate in outdoor activities.Rashes can also appear for serious events such as anaphylaxis or heat stroke, which are medical emergencies.Rashes can be caused by heat, sun, allergies, bites or stings, or chronic conditions that worsen in the heat.In Australia, many people experience rashes in the warmer months.