What is a head louse? The head louse, also called Pediculus humanus capitis, is a parasitic insect. Each year, more than 100 million people are infested with lice. This infestation is called pediculosis. Head lice are lodged in the scalp of humans, because they find all the comfort of an ideal habitat: high temperature, humidity and food. They feed […]
What is alopecia? The alopecia is a medical term for a hair loss leaving the skin partially or completely naked. The pattern baldness, or androgenetic alopecia, is the most common form of alopecia. It affects men especially. Hair loss is a natural phenomenon strongly determined by heredity. Other forms of alopecia can reveal a health problem or be caused by medication, for example. In Greek, […]
Alopecia areata differs from baldness, which causes hair loss (not hair) for mainly hereditary reasons. On this subject, see our Alopecia sheet. The alopecia areata: what is it? The areata causes loss of hair in patches, usually in the scalp. The skin of the skull retains its normal appearance, but is simply devoid of hair in places. It is also called alopecia in plates. […]
Pediculosis is a human parasitic infection that has been widespread and known for thousands of years. Lice are bloodsucking insects (which feed on blood), of which only three species out of the over 4000 listed are human parasites. Definition of pediculosis Pediculosis means an infestation with lice in humans. There are three types of pediculosis: pediculosis of […]
Micropenis Causes, Sympto...
From birth, we speak of micropenis if the penis of a small boy is less than 1.9 centimeters long (after stretching and measured from the pubic bone to the tip of the glans) and if this small size is associated with no penile malformation .
The appearance ...
Strabismus Causes, Sympto...
Strabismus affects about 4% of the population. It corresponds to an abnormal deviation of one eye: strabismus is said to converge when the eye is deflected inwards towards the nose. This is the most common form of strabismus: twice when strabismus diverges ...
Fungal Infections of Skin...
Fungal Infections of Skin
Fungus can attack on any part of the skin and fungal infections are very common and include the most alarming athletes foot, itch, jock, ring worm and sometimes yeast infections as well.
Athlete's Foot
It is the most common ...
Occipital Neuralgia, Caus...
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Occipital Neuralgia
The occipital neuralgia is normally cause by the trauma to the occipital nerve, which is possibly caused by the auto-accident during which the head impacts the headrest. Additionally it may be caused by the spondylosis of your ...
What is syncope? Causes...
Syncope is a transient, short-lived loss of consciousness that ceases spontaneously. It is due to a sudden and transient fall of the blood circulation of the brain.
This transitory defect of oxygen supply to the brain is enough to cause a loss ...
Phimosis: what is it? Cau...
The phimosis occurs when the foreskin (the fold of skin covering the glans penis) can retract to expose the glans. This condition can sometimes increase the risk of inflammation between the glans and the foreskin .
Phimosis exists only in men whose penis is only partially circumcised or ...
Scabies: symptoms and tre...
The scab is a disease of contagious skin caused by a mite, mite. It causes itching of nocturnal predominance that is sometimes very intense and insomniating, especially in the hands, underarms, belly and genital area.
It is a benign parasitosis in the vast majority of cases, but requires treatment because it ...
Staphylococci Causes, Sy...
Staphylococci are Gram-positive cocci bacteria, which are common in healthy people, usually in the lining of the nose. The bacteria can then colonize other regions, via the hands, and especially the wet parts of the body such as the armpits or ...
Mouth ulcers Causes, Symp...
The canker sores are small superficial ulcers that are most often formed on the mucous membranes inside the mouth : on the inside of the cheeks, the tongue, and the inner side of the lips, the palate or the gums. Canker sores can also appear on the genitals ...
Kawasaki disease Symptoms...
What is it?
Kawasaki disease, or Kawasaki syndrome, is an acute systemic inflammatory disease that occurs primarily in children under 5 years of age and can lead to serious heart damage and death. It is the leading cause of acquired heart disease ...
Rhinitis: focus on allerg...
What is allergic rhinitis?
The allergic rhinitis is characterized by sneezing repeatedly, the "runny nose" tickling in the nose, watery eyes and eye irritation. When it is caused by pollen, it is called seasonal rhinitis or, more commonly, hay fever .
These symptoms result from abnormal sensitization and an overreaction ...
Intertrigo Causes, Sympto...
The term intertrigo comes from Latin inter, between and tergo, I rub. It therefore refers to dermatoses located in areas where two areas of skin touch and rub, called folds.
Definition of intertrigo
What is it ?
Intertrigo is a dermatosis localized to skin ...
Genital herpes Causes, Sy...
The herpes genital is a sexually transmitted infection (STI), characterized by the appearance of small painful blisters on the genitals. These vesicles are transparent and filled with liquid (see diagram).
The symptoms are manifested by outbreaks . The vesicles are visible for 5 to 10 days, then disappear often for several months ...
Breast cancer Symptoms ca...
A cancer signifies the presence of abnormal cells that multiply uncontrollably. In the case of breast cancer, cells can remain in the breast or spread through the body through the blood or lymphatic vessels. Most of the time, the progression of breast cancer takes several ...
Non-Hodgkin’s lymph...
Note . Non-Hodgkin's lymphoma is one of two types of cancer of the lymphatic system . The second category, Hodgkin's disease , is rarer. It is the subject of another sheet.
The non-Hodgkin lymphoma is a type of cancer of the lymphatic system , an important component of the immune system. When this disease occurs, it ...