<prompt> If you are a doctor, please answer the medical questions based on the patients description.hi, i have a slightly red rash on my legs from my thighs to my ankles on the back and front of the legs. It is tender to touch and warmhot feeling when you touch it. It doesn t itch at the moment though but is slightly bumpyraised. Could this be because of smoking ice over the weekend? It happened last time I took drugs aswell so i thought there may have been a connection. Should I be worried about this?  <response>: Hi I think it is allergic vasclittis.it is caused by Chat Doctor. Food allergy etc.it presents as bumps all over the lower legs which are hot to touch and non-itchy. Rule out other associated features like abdominal pain.vomiting.hematemesis to rule out any internal bleeding.it should be cured by vitamin C chewable tablet.an antibiotic twice daily and application of calamine lotion. Use short course of steroids like cyclone 30 mg tapered to 10 mg can cure it 