Phrynoderma is NOT due to deficiency of
PHRYNODERMA(toad-skin disease):- May be a manifestation of vitamin A deficiency, though it may also be due to deficiency of essential fatty acids and even vitamin B. Manifests as rough, hyperkeratotic follicular papules around elbows and knees. Ref:- NEENA KHANNA; pg num:- 391
Essential fatty acids
Vit A
Vit D
Vit B
miscellaneous