As soon as the body heats up or becomes agitated, the entire body feels itchy and prickly.

Itching all over the body when feeling hot or agitated may be caused by cholinergic urticaria, dry skin, allergic dermatitis, eczema, insect bite dermatitis, etc. Symptoms can be improved through cooling measures, moisturizing care, and medication. If itching occurs frequently or is accompanied by rashes or redness and swelling, prompt medical attention is necessary.

1. Dry skin: Insufficient skin moisture leads to reduced sebaceous gland secretion when overheated. Dry and shedding stratum corneum can stimulate nerves, causing itching without obvious rashes. It is recommended to enhance skin hydration, apply body lotion immediately after bathing, avoid washing with excessively hot water, and drink plenty of water to replenish fluids.

2. Cholinergic urticaria: Body temperature rises due to heat or agitation, stimulating cholinergic nerves to release acetylcholine, resulting in small hives and transient itching. It is advised to maintain emotional stability, avoid strenuous exercise, cool down promptly when overheated, and wear loose, breathable clothing.

3. Allergic dermatitis: After exposure to allergens such as pollen or dust mites, the skin becomes sensitive and itching worsens with heat or agitation, often accompanied by erythema and papules. It is recommended to use medications such as loratadine syrup, calamine lotion, or cetirizine hydrochloride tablets under medical guidance to relieve discomfort.

4. Eczema: Impaired skin barrier function triggers inflammatory responses due to environmental temperature changes or emotional factors, manifesting as dry, flaky skin with intensified itching when overheated. It is recommended to use medications such as desonide cream, hydrocortisone butyrate cream, or antipruritic ointments for dampness removal under a doctor's supervision to improve symptoms.

5. Insect bite dermatitis: Residual toxins from insect bites can induce itching when blood circulation accelerates due to heat or stress, stimulating the bite site and causing isolated red papules. Patients may use medicated treatments such as cooling oil, paeonol ointment, or chlorpheniramine maleate tablets as directed by a physician to alleviate symptoms.

Maintain a comfortable indoor temperature, wear cotton and breathable clothing, avoid scratching the skin, follow a light diet avoiding spicy and irritating foods, keep emotions balanced, and maintain regular sleep patterns to support stable skin health.