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.
Lice vs Crabs. Lice and crabs are completely different types of animals found among the invertebrates, yet these both belong to the same taxonomic phylum, Arthropoda, as they have jointed legs.ody size could be considered as the main external difference between them, but there are many other significant variations in lice from crabs. However, the common reference of some false crabs such as King crab, Hermit crab, Porcelain crab, Horseshoe crab, and Crab Lice could be confusing with the true crabs.