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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.
Dandruff is a common scalp condition that affects most people at some time during their lives. It usually is first noticed when the sex hormones kick in, that is, during and after puberty. Before puberty dandruff is rare. Medical texts define dandruff as the excessive shedding of dead skin cells from the scalp.