Hives appear as raised areas with erythema (redness) and edema (swelling) involving the dermis and epidermis, which are very itchy. Acute hives can be caused by allergic reactions to foods, medications, cosmetics, or soaps. infections, insect bites or exposure; Environmental factors, latex, excessive skin pressure, cold or heat, emotional stress and exercise are among other factors of urticaria. Urticaria may be acute (< 6 weeks) or chronic (> 6 weeks).
Hives may be confused with other types of skin diseases that look similar and are also itchy. However, it can usually be distinguished from these diseases by an experienced physician. Hives is not contagious.
Signs and symptoms:
Information about the history of previous urticaria and the duration of rash and itching to categorize the urticaria as acute, recurrent.
Acute urticaria, the main considerations include possible triggers, such as:
- Drug use
- Recent infectious diseases
- Recent use of intravenous contrast agents
- Food
- Cologne, hair dye, creams and lotions
- New clothes
- Contact with new animal, dust, chemical and plant
- Pregnancy
- Contact with nickel , rubber, latex, industrial chemicals and nail polish
- contact with sunlight and cold
- physical activity
Physical urticaria is characterized by the following:
Raised and palpable red lesions, raised and palpable, which can be linear, annular (circular) or arcuate.
It can occur in any area of the skin. They are usually transient and migratory and may rapidly coalesce to form large areas of raised, inflamed lesions that blanch on pressure.
A physical examination should focus on conditions that may precipitate or potentially life-threatening urticaria and include:
- Angioedema of lips, tongue or larynx
- Solitary hives that are painful, long-lasting (more than 24 hours), or hemorrhagic or after resolution, hyperpigmentation or hematoma remains, indicating urticarial vasculitis.
- Systemic symptoms such as fever and joint pain
Individual hives usually resolve within 24 hours without treatment. However, angioedema may take up to 72 hours to resolve. Usually, hives do not remain after the symptoms have resolved. In acute urticaria, depending on the cause, the lesions can recur for up to 6 weeks. For chronic urticaria, hives flare up over days and for more than 6 weeks.
Treatment:
The treatment of hives is based on antihistamine and avoiding the factors that cause hives. Avoid using cinnamon, cardamom, thyme, ginger, herbal teas, spices, and spicy foods. in the bathroom do not take a very hot shower. Continue the treatment for a long time.
