I am 59years of age and I have been diagnosed with austio arthiritis.  I currently suffer from a skin rash on my upper arms and frequently experience dry mouth and also constipation.  I also have broken veins in my legs.  My current weight is approx 13 stone.  I am 5ft 2.5 inches in height.   I sometimes get pain in the lower rib cage left side.
Hi, I can understand your concern for the multiple of problem along with skin rash. After reading the query, in my opinion it appears to allergic dermatitis. In this condition there are rash with eruptions along with moderate itching. In more aggravated cases there is appearance of more redness. In this condition a thorough history of contact allergens are to be taken and accordingly a specific diagnostic technique known as patch test is to be undertaken. I suggest you to apply medium to high potency steroid cream application because are the best effective in this condition. I would have opted for either mometasone or clobetasol cream. For your problem of broken veins - it is known as Purpura. Take a lot of vitamin C in your diet which will strengthen the blood vessels. Chat Doctor.  So increase fiber diet and water intake.