I believe my face and neck have darkened due to hyperpigmentation. I initially assumed it was related to aging but now I think something else is taking place. I have used a diuretic for over 15 years, initially hydroclorathazide but in the last two years switched to Chlorthalidone. I use two more BP meds plus a proton-pump inhibitor and omeprazole. I avoid spending time in direct sunlight because the sun feels too hot on my skin. My lower and upper extremity colors remain unchanged. My arms have darkened a little but the skin texture and color of my face has become very dark. The neck line is similar to my arm colors. I am searching for a dermatologist but in the meantime I wonder if there are any other people of African-American descent having this problem. I am not on dialysis or have kidney problems.