Why does the body feel itchy during exercise?

Itching during exercise is usually caused by factors such as sweat irritation, accelerated blood flow, cholinergic urticaria, eczema, or neurodermatitis. If discomfort occurs, it is advisable to seek medical attention promptly. Detailed explanations are as follows:

1. Sweat Irritation

Excessive sweating during exercise may lead to skin irritation due to substances like salt and lactic acid in sweat, causing itching. This may be accompanied by skin redness and mild stinging. It is recommended to wash the body promptly after exercise, especially areas prone to sweating, to keep the skin clean and dry.

2. Accelerated Blood Flow

During exercise, increased cardiac output accelerates blood circulation, which may cause some individuals to experience skin itching. Performing proper warm-up exercises before physical activity and avoiding sudden increases in intensity can help. Replenishing fluids and electrolytes after exercise may also alleviate the itching sensation.

3. Cholinergic Urticaria

Cholinergic urticaria is associated with physical activity and heat exposure. During exercise, the body releases more acetylcholine, and some individuals may be allergic to this substance, resulting in itching, along with symptoms such as erythema and hives. Under a doctor's guidance, medications such as loratadine tablets, cetirizine tablets, or calamine lotion may be used for treatment.

4. Eczema

Eczema can be triggered by genetic factors or dry environments. During exercise, sweat irritation and friction may exacerbate eczema symptoms, leading to itching, possibly accompanied by papules or blisters. Treatment should be conducted under medical supervision using topical medications such as hydrocortisone cream, mometasone furoate cream, or erythromycin ointment.

5. Neurodermatitis

Neurodermatitis is related to emotional fluctuations and anxiety. Mental tension or excitement during exercise may worsen dermatitis symptoms, causing itching, along with lichenification and skin thickening. Medications such as diazepam tablets, alprazolam tablets, or fluticasone propionate cream should be used according to medical advice.

In daily life, it is recommended to wear breathable clothing, maintain adequate hydration, keep the skin clean and dry, and avoid excessive friction or scratching.