THE wonderful efficacy of thyroid feeding in myxoedema and cretinism is so well attested that there can be no doubt about it. The discovery of this method of treating these diseases may well be reckoned among the most noteworthy of the advances in modern therapeutics.
In myxoedema we find that the skin is dry and scaly, the hair is lost from the scalp and other hairy parts, and the nails are more or less deformed. Under thyroid feeding it was observed that the skin ceased scaling and resumed its normal appearance; that the hair grew again, and that the nails became once more sound. From this it was argued that thyroid feeding should prove curative in those diseases of the skin in which there is dryness and scaling. Psoriasis, eczema, dermatitis exfoliativa, icthyosis, have all been subjected to thyroid feeding, and reports of cases have already appeared in the medical journals. In rosacea one case, and lupus vulgaris two cases, the remedy has been tried and results reported....
J Cutan Genito-Urin Dis. October 1894;12:409.
JACKSON GT. THYROID FEEDING IN DISEASES OF THE SKIN. Arch Dermatol. 1994;130(10):1335. doi:10.1001/archderm.1994.01690100125027