Apis M. Head remedy for urticaria. Worse by warmth in bed itching and burning but no thirst. Circumscribed which may be red or pale with violent itching Give in IX or 6th dilution.

Urtica Urens. This should be tried when Apis, fails. It has the similar symptoms as in Apis, except that it has frequent urination.

Pulsatilla. Will best meet the hives of gastric origin. Urticaria with vomiting and diarrhoea.

Antim Crud. When due to gastric catarrh; due to the use of acids. Worse by heat.

Astacus Fl. Chronic form of urticaria; nettle-rash on whole body with itching.

Rhus Tox. Urticaria with burning and itching which is better in warmth and heat. Throwing off of clothes aggravates burning and itching.

Dulcamara. Urticaria over whole body, itching burns after scratches; worse in warmth, better in cold. Rash before menses.

Arsenic Alb. Should be thought of when the patient has thirst for small quantities of water at short intervals. Specific when due to eating shell fish. The wheals itch and burn intensely. Urticaria at the sea-shore.