chemicals released by the injured tissue cells and leukocytes cause the VASODILATION of the arterioles in the injured area and cause the local hyperemia to form accounting for the redness and heat.
Increased capillary permeability
During diffusion, the random motion of atoms causes them to spread out gradually.
convection
During an inflammatory response, neutrophils and macrophages work to "wall off" and contain the foreign material. This is done through the formation of granulomas, fibrosis, and encapsulation to prevent the spread of infection or damage to surrounding tissues. Additionally, the body may initiate the process of phagocytosis to engulf and remove the foreign material.
Discoloration around scar tissue, known as post-inflammatory hyperpigmentation, is typically caused by an increase in melanin production as the skin heals. This can be exacerbated by sun exposure or inflammation during the healing process. Treatment options may include topical treatments, laser therapy, or chemical peels to address the discoloration.
Increased capillary permeability
Histamine
During inflammation, blood vessels dilate to allow more blood and immune cells to reach the affected area. This causes redness and swelling. Immune cells release chemicals that help to fight off pathogens and repair damaged tissue. Pain and heat may also be present at the site of inflammation.
During the inflammatory response, there is vasodilataion, that increases blood flow to the particular region. Increased number of blood cells, along with the sluggish blood flow, causes the region to appear red. Local substances produced in response to inflammation (prostaglandins and leukotrienes), mainly metabolites of the arachidonic acid metabolism, cause the swelling.
diapedesis
The release of inflammatory mediators such as histamine, prostaglandins, and nitric oxide causes arterioles in the damaged area to dilate. This dilation increases blood flow to the damaged tissues, bringing in immune cells and nutrients to aid in the healing process.
Blood rushes to the site of inflammation so as to supply immune cells to fight the source of inflammation. This causes an increase in heat at the site.
Histamine
Histamine
Redness is a vasodilatation of nearby undamaged blood vessels.
Studies show that the process evaporation causes the minerals to form.
The inflammatory substance responsible for pain during menstruation is prostaglandins. The prostaglandins cause the uterine contractions, but in high quantities it will cause blood vessels supplying the uterus with blood to construct so starve the uterus of blood/oxygen very temporarily, and thus this is what causes the pain during menstruation.