Miliaria, also known as prickly heat rash or heat hives, affects all age groups including babies, children, and adults. Sweat or a blocked sweat gland is the primary cause for this. It leads to allergies and skin reactions that cause tiny itchy blisters on the skin. One can verify prickly heat rash on the skin by symptoms like itchy skin, redness, growth of heat hives or tiny blisters on the skin surface that cause discomfort to the affected person. As soon as symptoms of heat hives or heat blisters appear on the skin, one must take precautions and follow the treatment procedures to ease prickly heat rashes.
 

You may get heat hives or rashes if there is a blockage in the sweat glands. People with this blockage are strongly affected by the itchy skin condition that has symptoms like redness and itching of the skin, blisters, hives or rashes. Usually, babies and little children have greater chances of developing these rashes due to their underdeveloped sweat glands. Prickly heat symptoms increase during activities raising the body temperature including exercise, sun bathing, warm or synthetic clothes, and can be environment-based in hot and humid climatic conditions. All these cause sweat and in turn give rise to symptoms of prickly heat or itchy skin and hives. Such hives and prickly heat symptoms increase during the hot humid weather when sweating should be profuse but underactive or blocked sweat glands prevent sweating.
 

Rashes of prickly heat look like tiny blisters or red bumps on the skin that cause itchy skin. They can give the appearance of angry beads of sweat. Though the rash of prickly heat hives is not very serious, it both looks and feels unpleasant on the skin as it can mark a startling change in the person’s look for some time. Normal symptoms or rashes and blisters and the associated redness fade in some hours or days. The skin undergoes rapid changes and removing sweat-inducing stimuli can cause these hives to disappear just as suddenly as they appear.
 

Though symptoms of bumpy red itchy blisters on the skin look similar to the bumps caused by an infection in the hair follicles, the bumps differ in their appearance. You will not find any hair follicles in the skin that has developed hives or blisters caused by heat.