Define the rub: something that causes a difficulty or problem â the rub in a sentence something that causes a difficulty or problemâ¦ See the full definition
Knowing the difference between lice and dandruff can help heal your scalp condition properly. Lice are infectious parasites and dandruff is a self-contained scalp condition. Dandruff comes from the head, and flakes off. Dandruff is due to the excessive shedding of dead skin cells from the scalp, and lice are wingless insects (small bugs) that infest the hair and scalp. The methods of prevention and treatment also vary between lice and dandruff.
Letâs just start by explaining the difference between the dandruff and dry scalp. Dandruff is not just a flaky scalp. In fact, your scalp flakes ALL the time but you usually donât see it because in a healthy scalp the flakes are microscopic. Dandruff occurs when the flakes are large and are accompanied by itching and inflammation. There are 3 requirements for dandruff to occur: 1  Oily scalp â Your scalp produces sebum on a regular basis. 2  Yeast â Your scalp must be colonized by a certain strain of yeast (Malassezia globosa). The yeast eat your scalp oil and âpoopâ out a potentially irritating compound called oleic acid.