Dear customer, Welcome to Just Answer.Generalised Itching can be difficult to diagnose.The process is one of exclusion,food and medicine allergy being the most likely culprits.Other causes would include renal disease and liver disease,thyroid disorders,diabetic problems,hormone secreting tumours of the gasterointestinal tract,psychogenic stressors like anxiety and depression,blood disorders and malignancies like Polycythemia vera and Hodgkins lymphoma,Iron deficiency anaemias,Scabies and other infestations,secondary to infections,autoimmune disordersd and skin diseases like Atopic Dermatitis/Eczema,Pemphigoid and Idiopathic urticaria.Extremes of weather lioke cold/hot and dry conditions/Environmental allergens like pollen may also cause such problems.Autoimmune diseases like Lupus/,Scleroderma and fibromyalgia may need exclusion. Avoiding spicy food,alcohol,tobacco
,warm baths and brisk towelling will help.Use of loose ,light natural fibre clothes will help.Adequate hydration,use of emmollients and moisturisers,use of starch in bathwater will help. Drugs like sedating antihistaminics like Benadryl/Hydroxizine (Atarax),nonsedating antihistaminics like Loratidine(Claritin)/Fexofenadine(Allegra),steroids like Methylprednisolone /Prednisolone in the short term will help.Leukotriene inhibitors like Monteleukast,antidepressants like amitriptyline,Doxepin will help.Use of H -2 inhibitors like Ranitidine,famotidine are also useful.Omalizumab and cyclosporine will be of use in long term.Ointments and creams like Pramoxine,soothing creams will help.Ultraviolet light has also been used in treatment.You probably need to see a Dermatologist for opinion regarding further management.You may also see a Endocrinologist and a Immunologist who may identify the problem.
Edited by Vakul Aren on 2/1/2011 at 1:13 PM EST