Hives
There are some situations when infection or allergy would cause your immune system to produce histamine in the bloodstream. As a result, blood vessels in your skin would expand and carry fluid to the epidermis – the uppermost layer. This accumulation might lead to swelling, which is also known as urticaria or hives. Depending on the amount of released fluid, hives might look as raised spots of inflammation without distinct borders, appear spongy, or whiten when pressing. Also, this condition might affect large skin areas and be very itchy. Antihistamines might be helpful in relieving inflammation and itching. [2]
