Lumps on the scalp that are very itchy also dandruff any explanation?

Itchy bumps: The most common cause is the dandruff itself. Other causes , such as lice, etc., are more uncommon.

SeborrheicDermatitis: A common skin condition that affects the scalp. Stress and fatigue often contribute to seborrheic dermatitis. Particularly stressful events and situations can actually worsen seborrheic dermatitis almost immediately. There’s no cure for this condition, it is possible to get it under control and eliminate future flare-ups. Rec. See your pcp to get the final diagnosis and management.

Dermatologist: You could have psoriasis of the scalp or other skin disorders. A dermatologist would be best to diagnose and treat the condition.