They form a scabby cap and eventually fall off attached to a small clump of hair, leading to bald patches.
Times, Sunday Times
Cops found two broken banisters and long clumps of hair outside the bedroom.
The Sun
Meaning you get shrill singing and large clumps of hair in your hands.
Times, Sunday Times
It's horrific, there are clumps of hair in the bath.
The Sun
They're gluing clumps of hair to my shoulders.
Times, Sunday Times