Hi, My son, aged 18, has dark pigmentation on his nose for more than a year now. He is overweight , weighs 98 kgs and is 5.10 ft tall. He has darkened skin in underarm area as well as back of his neck. He was tested by a Dermatologist for Thyroid and results are: T3=1.41 ng/dl, T4=7.75 ug/dl,TSH=6.16 ug/mL, FT4=1.22 ng/100 mL. He was prescribed Terbicip Cream, BanTan Cream, Tretin Cream 0.05%, and Tab AF-150. a month, Treatment was followed for but discontinued as there was no visible improvement. Now the dark pigmentation on the nose is becoming more prominent. I want to discuss this with a specialist now. Thanks!