Can people with chronic urticaria donate blood?

Chronic urticaria is a relatively common skin disease and also a disease caused by infection. For patients with chronic urticaria, since the disease is not an infectious disease, it cannot be transmitted through blood, so there is no problem for patients to donate blood. However, during the onset period, the patient's resistance may be relatively poor, so if patients with chronic urticaria want to donate blood, they must avoid the onset period.

1. Patients with chronic urticaria should pay attention to their diet and avoid triggers.

The onset of urticaria has a certain relationship with diet, and certain foods may be triggers. For example, fish, shrimp and seafood, canned food, pickled food, beverages containing artificial colors, preservatives, yeast and other artificial additives can induce urticaria. In addition, irritating foods such as overly sour and spicy foods will also reduce the digestive function of the gastrointestinal tract, causing food residues to stay in the intestines for too long, thereby producing peptones and polypeptides, increasing the chance of human allergies.

2. Patients with chronic urticaria should pay attention to hygiene and avoid adverse stimulation.

People with a history of urticaria should pay attention to keeping indoor and outdoor areas clean and hygienic, and keep fewer pets such as cats and dogs at home. Avoid inhaling pollen, dust, etc. Stay away from wind, cold, heat, dampness, dryness, fire, insects and poisons. The rules of life are adapted to the changes in the external environment. Drinking, heat, emotional excitement, exertion, etc. will aggravate the dilation of blood vessels in the skin, triggering or aggravating urticaria. Rubber gloves, hair dyes, perfumed soaps and detergents, chemical fiber and wool clothing, etc. may become adverse irritations for people with allergies or urticaria and should be avoided. People suffering from cold urticaria should not go to the beach or take cold baths, and should keep warm in winter.

3. Patients with chronic urticaria should pay attention to allergies caused by drugs.

In clinical practice, some drugs can cause urticaria, such as antibiotics such as penicillin, tetracycline, chloramphenicol, streptomycin, sulfonamides, polymyxin, antipyretic analgesics such as phenacetin and aspirin, etc.

4. Patients with chronic urticaria should actively treat the underlying disease.

Urticaria is both an independent disease and a skin manifestation of certain diseases. There are many diseases that can cause urticaria, such as infectious diseases: parasitic infections such as intestinal ascariasis and pinworms; bacterial infections such as dental caries, alveolar abscess, tonsillitis, otitis media, sinusitis, etc.; viral infections such as hepatitis B; fungal infections such as tinea pedis and tinea manuum. In addition, diabetes, hyperthyroidism, menstrual disorders, and even potential tumors in the body may cause urticaria.