According to some dictianory:Seborrheic dermatitis is a common, inflammatory skin condition that causes flaky, white to yellowish scales to form on oily areas such as the scalp or inside the ear. It can occur with or without reddened skin.
Dandruff is the small pieces of dead skin in a person's hair. It is the cracking of dead skin cells from the scalp. Dandruff is not to be confused with a simple dry scalp. Dandruff is a common scalp disorder affecting just about half of the population at the post pubertal age and of any sex and society. It often causes itching. It has been well established that keratinocytes play a key role in the appearance and generation of immunological reactions during dandruff formation. The severity of dandruff may rise and fall with season as it often worsens in winter. Those affected by dandruff, find that can cause social or self-respect problems, signifying treatment for both physiological and psychological reasons.
Dandruff is an itchy and mostly a persistent skin problem in which the scalp produces and sheds new cells at an abnormally fast rate, which results in white flakes (old skin cells) falling from the scalp. Dandruff can be very embarrassing and irritating, but also it is rarely dangerous. It can come at any age, but it is majorly common in adults and teenagers. The proper cause of dandruff is not fully still known, but there are many theories providing possible reasons for dandruff.
The dandruff is a fungus called Malassezia furfur. This causes a state of inflammation of the skin which leads to over-turn the Growth of epithelial cells in the escape. Going through this process of rapid scaling skin cells can not detach one by one, invisibly (as normally happens) but the process is much faster cells remain adherent to each other in the form of scales (peeled). Seborrheic dermatitis is a chronic disease that medical specialists puts in the group one of dermatoses, appearing under the influence of certain factors related to our own state of health, such as the endogenous and the estrogen. It can be classified according to the age at which it occurs, can occur in adults and in infants. Seborrheic dermatitis around the head (scalp) is known as the pitiriatis-dandruff. Dermatitis can occur on the face, the trunk, and the presternala interscapulovertebral area . Locate the areas rich in sebaceous glands, depending on the topographic areas with clinical aspects. The areas most commonly affected by seborrheic dermatitis are areas centrofaciale-brow, middle brow median eyebrow-area, perioral area and scalp.
Dandruff is the shedding of dead skin cells from the scalp ,dandruff are also known as scurf (Flakes on the surface of the skin that form as fresh skin develops below, occurring esp. as dandruff. ) or Pityriasis simplex capillitii, affects the scalp and causes flakes of skin to appear - it is a natural process. Our skin cells renew themselves. When the skin cells on our scalp are renewed the old ones are pushed to the surface and out of the scalp. A person with dandruff has faster skin cells renewal , meaning more dead skin is shed, making the dandruff more noticeable. Even though dandruff is very common, people actually know little about what causes and often relate it to poor hygiene which is not true, Dandruff are not causes by poor hygiene,
With our limited resources and money we have conducted a small survey on dandruff,the result what we have got may not be generalized but it does provide a lot of information regarding dandruff,We have conducted survey with 200 boys and 140 girls,
As you can see from the above data; out of 200 boys 55 boys has dandruff and out of 150 girls 53 girls have dandruff,since people with dandruff may not have itchy scalp as dandruff are dead cells and do cause any problem to the hair or head; where as itchy scalp are cause by fungal dandruff which is acutally caused by yeast-like fungus.
Ignoring the decimal values ; you can see in the above figure the percentage in total for girls and boys having dandruff is same though we have taken 60 more boys in the survey
This graph show the dandruff percentage of girls and boys with respect to the number of girls and number of boys in the survey
In the above figure you can see that girls are more prone to itchy scalp than boys, boys do have itchy scalp but less than girls. From this survey we have concluded that girls are more prone to dandruff than boys