The difference between eczema and prickly heat lies in the season of illness, causes, symptoms and other aspects. 1. Eczema: This disease is a chronic inflammatory itchy skin disease, which can occur all year round without any special stage of onset. The cause of eczema is not completely clear, but studies have shown that it is related to heredity, immune abnormalities, female hormone level disorders and contact with allergens, such as beef, animal dander, pollen, etc., and can be secondary to diabetes mellitus, hyperthyroidism and other diseases. Acute phase manifests as erythema, corn-sized papules, blisters, vesicles and oozing; subacute phase manifests as erythema, mild desquamation, vesicles and scabs; chronic phase manifests as rough and hypertrophic lesions and mossy changes. Usually accompanied by itching symptoms. 2. Prickly heat: this disease is a superficial, inflammatory skin disease, occurring in summer, or hot and humid environment, mainly due to the blockage of sweat ducts and caused by sweat ducts, and sweat ducts underdevelopment, infection, strenuous exercise and other factors. Prickly heat can be categorized into white prickly heat, red prickly heat, pus prickly heat and deep prickly heat, and can occur on the trunk, armpits, neck and other parts of the body. Small blisters and pimples will appear locally, which may be accompanied by symptoms such as tingling, itching, headache, fever and dizziness. When the above symptoms appear on the body, patients are advised to go to the hospital to improve the relevant examination, so that doctors can easily diagnose eczema and prickly heat.