Hi.
How would you describe the scaly skin? Are they silvery scales? Leathery? Any other symptom?
Skin scaling can be caused by many conditions, including psoriasis, fungal infections, ichthyosis, allergies, erythroderma, vitamin deficiency, etc. It would be best if you consulted a dermatologist to completely evaluate your symptoms.
Good luck.
I would try asking under Dermatology