When the sebum of a comedo is exposed it oxidizes producing?

Last Update: May 30, 2022

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Asked by: Prof. Josianne Kertzmann
Score: 4.3/5 (24 votes)

An open comedo, also known as a blackhead, is a hair follicle filled with keratin and sebum. Comedones appear most frequently on the face, especially in the T-zone, the center of the face (Figure 8–7). When the sebum of the comedo is exposed to the environment, it oxidizes and turns black.

Which skin disease is caused by skin cells turning over faster than normal?

Psoriasis turns your skin cells into overachievers: They grow about five times faster than regular skin cells. And your body can't keep up. The old cells build up instead of sloughing off, making thick, flaky, itchy patches.

Which of the following skin conditions is described as a crack in the skin that penetrates the dermis?

Skin fissures are cracks in the skin that form due to intense dryness and thickened skin. Fissures can be shallow or deep, and they may bleed or be painful.

What does the D on the American Cancer Society Cancer Checklist stand for?

“D” is for diameter. Is the mole or spot larger than the size of a pea? “E” is for evolving.

Which of the following is a common extremely contagious bacterial infection of the eye?

Conjunctivitis/pink eye

It can also result from allergies or exposure to chemicals, like chlorine, in swimming pools. Conjunctivitis caused by bacteria or virus is extremely contagious.

Extremely Clogged Pores Extracted | Contour Dermatology

20 related questions found

What is the best antibiotic for eye infection?

Oral antibiotics such as azithromycin or doxycycline are effective treatments.

What does eye infection look like?

Discharge out of one or both eyes that's yellow, green, or clear. Pink color in the "whites" of your eyes. Swollen, red, or purple eyelids. Crusty lashes and lids, especially in the morning.

Can you have melanoma for years and not know?

How long can you have melanoma and not know it? It depends on the type of melanoma. For example, nodular melanoma grows rapidly over a matter of weeks, while a radial melanoma can slowly spread over the span of a decade. Like a cavity, a melanoma may grow for years before producing any significant symptoms.

What are the 4 signs of skin cancer?

How to Spot Skin Cancer
  • Asymmetry. One part of a mole or birthmark doesn't match the other.
  • Border. The edges are irregular, ragged, notched, or blurred.
  • Color. The color is not the same all over and may include shades of brown or black, sometimes with patches of pink, red, white, or blue.
  • Diameter. ...
  • Evolving.


What are the 7 warning signs of skin cancer?

7 warning signs of Skin Cancer to pay attention to
  • The 7 Signs.
  • Changes in Appearance.
  • Post-Mole-Removal changes to your skin.
  • Fingernail and Toenail changes.
  • Persistent Pimples or Sores.
  • Impaired Vision.
  • Scaly Patches.
  • Persistent Itching.

Which of the following is found in the reticular layer?

The reticular layer also contains hair follicles, sweat glands, and sebaceous glands. The sweat gland can either be apocrine, such as those found in the armpits and the groin area, or the eccrine glands, which are found all over the body.

What is abnormal skin inflammation caused by touching certain substances to the skin?

When certain substances come into contact with your skin, they may cause a rash called contact dermatitis.

Which layer of dermis is involved in dermatitis?

The dermis, or innermost layer, is responsible for providing structure and support to the skin. Eczema is believed to arise when the body's immune system is triggered into an abnormal, overactive, inflammatory response that involves both the epidermis and the dermis.


What do lesions look like?

Skin lesions are areas of skin that look different from the surrounding area. They are often bumps or patches, and many issues can cause them. The American Society for Dermatologic Surgery describe a skin lesion as an abnormal lump, bump, ulcer, sore, or colored area of the skin.

What does dead skin look like?

Dry skin may appear dull and flakey. Oily skin often appears greasy or shiny. Combination has patches of both dry and oily skin.

How can you prevent overproduction of skin cells?

These remedies include:
  1. Topical retinoids: Creams that contain retinol and other substances that come from vitamin A. These creams can help the skin produce new, healthy cells more quickly.
  2. Topical corticosteroids: Mild steroid creams that can reduce itching.

What does Stage 1 melanoma look like?

Stage 1: The cancer is up to 2 millimeters (mm) thick. It has not yet spread to lymph nodes or other sites, and it may or may not be ulcerated. Stage 2: The cancer is at least 1 mm thick but may be thicker than 4 mm. It may or may not be ulcerated, and it has not yet spread to lymph nodes or other sites.


Can you have stage 4 melanoma and not know it?

When stage 4 melanoma is diagnosed after a scan, there may be no symptoms at all, and it can be difficult to believe the cancer has spread. However, people with stage 4 melanoma may have a very wide range of symptoms. People who have melanoma diagnosed in the brain are told not to drive.

What happens if basal cell goes untreated?

This type of skin cancer needs to be treated and has a high cure rate. If left untreated, basal cell carcinomas can become quite large, cause disfigurement, and in rare cases, spread to other parts of the body and cause death. Your skin covers your body and protects it from the environment.

Has anyone survived melanoma 4?

Prognosis: Stage IV melanoma is very difficult to cure as it has already spread to other parts of the body. However, a small number of people respond well to treatment, achieve No Evidence of Disease (NED), and survive for many years following diagnosis.

Can you live a long life with melanoma?

almost all people (almost 100%) will survive their melanoma for 1 year or more after they are diagnosed. around 90 out of every 100 people (around 90%) will survive their melanoma for 5 years or more after diagnosis.


What is the life expectancy of someone with melanoma?

The overall average 5-year survival rate for all patients with melanoma is 92%. This means 92 of every 100 people diagnosed with melanoma will be alive in 5 years. In the very early stages the 5-year survival rate is 99%. Once melanoma has spread to the lymph nodes the 5-year survival rate is 63%.

Does eye discharge mean infection?

Eye discharge may be white, yellow, or green. Yellow or green discharge usually indicates that you have a bacterial infection in your eye. A bacterial infection should be checked by a doctor and may require prescription medication or eye drops. White discharge is likely not an infection.

Can I make my own eye wash?

It is possible to make saline solution at home by mixing together certain amounts of salt and water. When prepared correctly, homemade saline solution is similar to distilled water. For this reason, it is safe to use in the nose as a sinus rinse and as an eye rinse.

How do you know if your eye is infected or irritated?

Signs of an eye infection may include:
  1. Pain in the eye.
  2. A feeling that something is in the eye (foreign body sensation).
  3. Increased sensitivity to light (photophobia).
  4. Yellow, green, bloody, or watery discharge from the eye.
  5. Increasing redness of the eye or eyelids.