Repeated sudden swelling of one eye can happen due to allergy, eyelid gland blockage, recurrent infection, insect bite reaction, sinus-related inflammation, dry eye irritation, or swelling of tissues around the eye. Since you were given Doxycycline, Ecotear, and Incid-L, the doctors may have been considering inflammation, infection, dryness, or allergic causes. Temporary improvement followed by recurrence suggests the underlying trigger may still not be fully identified. The exact pattern of swelling matters. Allergy-related swelling often appears suddenly with itching or watering, while gland blockage or eyelid infection may cause pain, heaviness, tenderness, or localised swelling near the eyelid margin. Dry eyes and excessive eye rubbing can also irritate the surrounding tissues repeatedly. Cold compresses, avoiding rubbing the eye, maintaining eye hygiene, and limiting exposure to dust, smoke, cosmetics, or strong allergens may help reduce flare-ups. If swelling is associated with fever, vision changes, severe redness, pain while moving the eye, or facial swelling, further evaluation may be necessary to rule out serious infection or inflammation.

Night-time itching that temporarily improves after taking Incid-L may be due to an allergy, eczema, dry skin, scabies, a fungal infection, heat-related irritation, or sensitivity to soaps, fabrics or medicines. Itching often feels worse at night because the skin becomes warmer and there are fewer distractions, making the irritation more noticeable. If the itching keeps returning daily, the underlying trigger may still be active. The pattern of itching is important. Scabies commonly causes intense itching at night, with small bumps or marks around the fingers, waist, wrists, or groin, while allergy-related itching may appear as red,, raised patches or occur after exposure to food, dust, or medication. Dry skin and eczema can also lead to repeated scratching and disturbed sleep. Relief may improve with regular moisturisers, anti-allergic medicines, gentle soaps, loose cotton clothing, and identifying possible triggers. If there are visible burrows, family members with itching, spreading rashes, or skin thickening from scratching, skin-specific treatment may be needed rather than only antihistamine tablets.

Long-term urticaria means the skin becomes very sensitive and releases chemicals that cause itching, red patches, or swelling again and again. In many people, the exact trigger is never fully found. Heat, stress, dust, certain foods, painkillers, infections, pressure on the skin, or lack of sleep can sometimes make the itching worse. Since you have been taking Incid-L for many years, it may be controlling the symptoms only partially rather than stopping the condition completely. Some people need changes in anti-allergy medicines, longer-lasting tablets, or combination treatment to get better control. Keeping a record of foods, medicines, weather changes, or activities before flare-ups may help identify triggers. Using mild soaps, avoiding very hot baths, wearing loose cotton clothes, and keeping the skin cool may reduce irritation. Stress control and proper sleep may also help because urticaria often becomes worse during emotional stress or tiredness. If swelling affects the lips, tongue, throat, or breathing, immediate medical care is important because severe allergic reactions can become dangerous.

Severe itching all over the body, especially on the back, is commonly caused by allergy, dry skin, urticaria (hives), heat-related irritation, stress, insect bites, or skin conditions such as eczema. Less commonly, problems with the liver, kidneys, or thyroid may also cause repeated itching. If Incid-L Tablet (Cetirizine) is not helping, it may mean that the underlying trigger is not fully controlled or that the condition is not allergy-related. You should consult a doctor or dermatologist for proper evaluation rather than continuing the same tablet without benefit. The doctor may suggest blood tests to identify the cause or change your treatment to a stronger or different antihistamine, or add creams to soothe the skin. In the meantime, avoid hot showers, use a gentle moisturiser twice daily, wear loose cotton clothing, and try not to scratch, as this can worsen itching. Applying cool compresses can also give temporary relief.