Why do I get random welts on my arms?
In terms of allergens, hives can be caused by factors such as pollen, medications, food, animal dander, and insect bites. Hives might also be caused by circumstances besides allergies. It’s not uncommon for people to experience hives as the result of stress, tight clothes, exercise, illnesses, or infections.
Do welts come and go?
Hives often appear suddenly on any part of the body. They may appear in one place, go away in a few hours and then come back in another place. In severe cases, hives may come and go for several weeks. For most people, they are not serious.
What do stress welts look like?
Stress hives often look oval, round, or ring-like but also can take on irregular shapes. Hives are very itchy. You may feel a tingling or burning sensation as if you’ve been bitten by mosquitos. In addition, some welts may disappear only to be replaced by new ones within a few hours.
Why do I get a hive in the same spot?
Some patients have fixed hives, or recurrent episodes of hives occurring in the same spot or spots on their body. Fixed hives are usually due to a reaction from a certain medication (fixed drug eruption), or as a result of getting too much sunlight (fixed solar urticaria).
What is CIU?
Chronic idiopathic urticaria (CIU) is when the hives you’ve been dealing with have no known cause and last for 6 weeks or more. It’s also called chronic spontaneous urticaria (CSU).
What cancers cause hives?
Several cases of malignant tumors have been reported in association with urticaria, including leukemias and lymphomas,17,18 myeloma,19 testicular cancer,20 ovarian carcinoma,21 lung cancer,22 colon cancer,23 and thyroid carcinoma.
How do I know if I have hives or something else?
If you’re experiencing bumps that are itchy, inflamed, and swollen, you probably have hives. Hives can often be treated at home or go away on their own without treatment. If the bumps are hard or filled with pus or something other than clear fluid, they may be a sign of an underlying medical condition.