What causes itching over the trunk area of body but no rash?

Itchy skin without a visible rash can arise from various causes, including:

1. Skin dryness and irritation: Dry skin can itch. This can be worsened by factors like cold weather, hot showers, and certain soaps.

2. Allergic reactions: Allergies to food (e.g., peanuts, shellfish), certain substances (e.g., latex), or medications (e.g., penicillin) can trigger itching.

3. Insect bites or stings: Insect bites, especially from bed bugs, fleas, or mites, can cause itching without an immediate visible rash.

4. Medical conditions: Certain medical conditions, like liver or kidney problems, thyroid issues, iron deficiency, or diabetes, can lead to generalized itching.

5. Emotional stress or anxiety: Stress can manifest as physical symptoms, including itching and skin problems.

6. Pregnancy: Hormonal changes during pregnancy can cause itchy skin, especially around the belly, breasts, and thighs.

7. Contact dermatitis: This occurs when the skin comes into direct contact with an irritating substance, such as certain chemicals, plants, or fragrances.

8. Scabies: A contagious skin condition caused by tiny mites that burrow under the skin, leading to intense itching.

9. Folliculitis: Infection of hair follicles can cause itching and inflammation in affected areas.

10. Sun exposure: A sunburn can cause temporary itching before peeling occurs.

11. Medications: Some medications, such as antibiotics and chemotherapy drugs, may cause itching as a side effect.

If you experience persistent itching on your trunk without a rash, it's important to see a healthcare professional to determine the cause and receive appropriate treatment. They may recommend steps like avoiding triggers, using moisturizer or anti-itch creams, or further evaluation if the condition doesn't improve.