skin after and before dialysis

[nick]

hi there i having a problem after and before dialysis i can feel some rough skin only on my legs and they are small black spot do.and some is like scale  on my skin legs only legs, even i use moisturizing lotion still the same
1. any know what the cause of this? 
2. why some of the patient i getting  know here in Philippines there skin getting so dark?
3.after dialysis i saw my face building up an pimples is that normal?

[BigSky]

From my understanding on skin color its a form of hyperpigmentation.

Darkening of skin is thought to be caused by the accumulation of middle-molecular-weight substances (urochromes).

While it can occur in any skin tone, people with Asian, Mediterranean or African skins tones are more likely to experience it.

[RightSide]

The scaling and peeling of dry skin can be caused by dialysis sucking out the fatty acids from your bloodstream.  Your body needs a little bit of oil to keep your skin supple.

A few months after starting dialysis, my skin started drying out too.

I started taking fish oil capsules (1200 mg a day after dialysis), to replenish my omega-3 fatty acids, and the dry skin mostly disappeared.