Actinic keratoses usually develop in areas that’ve been damaged by years of sun exposure. They form when you have actinic keratosis (AK), which is a very common skin condition. AK occurs when skin cells called keratinocytes start to grow abnormally, forming scaly, discolored spots.
Injection anthrax symptoms are similar to those of cutaneous anthrax, but injection anthrax can spread throughout the body faster and be harder to recognize and treat than cutaneous anthrax. Skin and injection site infections associated with injection drug use are common and do not necessarily mean the person has anthrax.
The cause varies with the type of birthmark. Some birthmarks form when blood vessels do not form properly. This can cause your baby to have one of the following birthmarks: Strawberry hemangioma ; Deep hemangioma ; Port-wine stain ; Salmon patch ; Other birthmarks appear when cells that give our skin color, melanocytes (meh-lan-oh-cites), clump together.
Most bug bites and stings from common insects are harmless and heal quickly. But some bug bites and stings, like those from fire ants, wasps, hornets, and bees, may cause intense pain or even a serious allergic reaction. Others, like poisonous spider bites, require immediate emergency medical care.