This disease can affect people of any age, but it is mostly seen in young and elderly people.
Ticks that cause ulcers are tiny parasites, smaller than a pinhead. They are usually spread through direct skin-to-skin contact with someone who already has an ulcer and sometimes, but rarely, through shared clothing, towels, or bedding. Scars on pets are caused by a different type of tick and therefore cannot infect humans. People with ulcers have an average of about a dozen adult mites on their skin
By burrowing into the human skin, this very small creature causes an allergic reaction. The severe itching caused by infection is often so uncomfortable that it prevents a person from sleeping at night.
Scabies bite points
Scabies can appear on any part of the body, but it is most often observed in areas such as the back and palms of the hands, the spaces between the fingers, wrists, elbows, armpits, groin, and nipples.
In children, the involvement is usually more extensive and the entire body can be affected, even the palms, feet, and head.
Scratching the lesions sometimes causes purulent infections to mount on the scabies lesions.
What people are more susceptible to scabies?
Children, mothers with infants, elderly people living in nursing homes, soldiers, prisoners, know that scabies is not a sign of lack of hygiene.
Parasite life cycle
The place where the parasite lives is inside the skin of the human body, especially the skin of the folded areas of the body such as the armpits, the inside of the elbows, the genital area around the breasts, the skin between the fingers, etc. Then it creates a tunnel on the horizontal surface so that it advances about 2-3 mm every day and lays its eggs inside it. During its life of 4-5 weeks, the female parasite lays about 40-50 eggs inside the subcutaneous tunnels, after 3-5 days about 10% of them open and larvae emerge from them that feed on skin cells. and they create new tunnels and eventually turn into adult parasites. The life cycle of the parasite from egg to egg lasts 10-24 days. Scabies itching is the result of the body’s allergic reaction to parasites, eggs and their remains.
How does scabies spread?
Sexual contact is the most common form of scabies transmission among young people who are sexually active. Scabies is spread through close contact with a person who has scabies and can also be spread by shared towels and other personal items. Scabies can often affect several family members. It takes effect at one time, and you can pass it on to someone else before you have any symptoms. The places where the parasite enters are (the spaces between the fingers, the flexor surfaces of the wrists, elbows, armpits, belt line, legs, scrotums (in men) and breasts (in women).
In the elderly, scabies is more common in Occurs on the back In infants and young children, nests are usually located on the palms of the hands and feet. In adults, papules and vesicles are 1 to 3 mm in size. These lesions are blister-like and filled with clear fluid.