What is 'Comparative Advantage' Comparative advantage is an economic law referring to the ability of any given economic actor to produce goods and services at a lower opportunity cost than other economic actors.
Though dandruff does not cause dry scalp. They are different health problems which are caused by different factors and needs different treatments plans to tackle them. It becomes absolutely necessary to first diagnose the problem along with its causes, before planning a treatment plan for the ailment.
Other possibilities are seborrheic dermatitis, eczema or psoriasis(less likely). The dryness of scalp can be due to dandruff or seborrheic dermatitis. It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided.he main causes of contact dermatitis could be a new shampoo, soap, hair dye or hair product, mainly if the product has alcohol in it. It could also be due to seborrheic dermatitis or dandruff. Tinea capitis is another differential which could be diagnosed with the skin scrapings evaluated under the microscope.