My scalp is itchy, dry, and covered in pimples. i've experienced more hair loss since winter began. how can i treat my scalp?

Depends on diagnosis: It could be seborrheic dermatities, in which case a sulfur type shampoo used regularly to all hairy areas may help; it may also be a form of acne, in which case low fat diet, and a tetracylcine antibiotic may help. In winter, skin gets very dry and this may be a type of exzema or dry skin condition--moisurizer (no added chemicals). Hair loss too...Dermatologist.