According to the NHS
scaly, itchy and red patches on skin on scalp, face and other areas of the bodyred or silver rash on scalp, sometimes with patchy hair losstinea capitis
, known as ringwormdry, red, flaky and very itchy skin on areas of the bodyeczema
red, inflamed (irritated) skin; may also have blisters and cracked skin – reaction to products such as hair dye, sprays, gels or moussescontact dermatitis
red, flaky, crusty and sore patches of skin covered with silvery scalespsoriasis
greasy, yellowish crusts on baby's scalp, eyebrows and nappy areacradle cap
Oily dandruff tends to take the shape of big and plaque-like flakes. The scalp quickly becomes oily again. Dry dandruff is a problem for dry scalps. The flakes tend to be small and fine, and often accompanied by an itchy scalp.