I would consult with a dermatologist to determine if you may have a condition known as Lichen planus of the nails. The nail plate tends to thin and may become grooved and ridged. The nail may darken, with reddish or purplish striae.(lines) The nail may also thicken up or lift off the nail bed. Sometimes the cuticle is destroyed and forms a scar. The nails may shed, stop growing altogether and rarely, completely disappear.
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I agree a consult with the dermatologist is prudent in your situation. What is important is that not every person experiences every symptom exactly as described. As you mentioned the redddish streaks, lichen planus was a consideration.
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The red streaks can also be caysed by splinter hemorrhages which are longitudinal thin lines, red or brown in color, that occur beneath the nail plate. They are visible when capillaries within the epidermal ridges leak. While splinter hemorrhages may denote benign problems such as local trauma, psoriasis, or localized fungal infection, they are a classic finding in patients with endocarditis.