Skin and subcutaneous (L00-L99).
- Acute urticaria
- Allergic urticaria
- Aquagenic urticaria – hives after water contact.
- Cholinergic urticaria – hives caused by sweating or heavy exertion.
- Chronic urticaria
- Idiopathic urticaria – hives whose cause is unclear.
- Contact urticaria
- Periodic/recurrent urticaria
- Urticaria due to cold/heat
- Urticaria bullosa – hives associated with blistering.
- Urticaria circinata – polycyclic limited foci.
- Urticaria cum pigmentatione – hives, after which subsides hyperpigmentation occurs.
- Urticaria e calore (heat urticaria).
- Urticaria factitia – hives due to mechanical irritation.
- Urticaria gigantea
- Urticaria haemorrhagica – associated with hemorrhages.
- Urticaria mechanica (pressure urticaria)
- Urticaria pigmentosa – benign generalized proliferation of tissue mast cells.
- Urticaria porcellanea – whitish edematous wheals.
- Urticaria profunda – associated with deep edema formation.
- Urticaria rubra – bright red discoloration of the wheals.
- Urticaria solaris – urticaria triggered by solar radiation.
- Urticaria vasculitis – systemic form of hives associated with vascular inflammation.
Infectious and parasitic diseases (A00-B99).
- Hepatitis B infection
- Hepatitis C infection
- Infections, unspecified:
- Bacteria
- Parasites
- Viruses
Musculoskeletal system and connective tissue (M00-M99).
- Systemic lupus erythematosus (SLE) – autoimmune disease with formation of autoantibodies mainly against antigens of the cell nuclei (so-called antinuclear antibodies, ANA), in some circumstances also against blood cells and other body tissues.
Neoplasms – tumor diseases (C00-D48).
- Chronic lymphocytic leukemia (CLL)
Injuries, poisoning, and other sequelae of external causes (S00-T98).
- Angioedema – transient swelling of the subcutaneous tissue of the lip/lid region.
- Serum sickness – type III hypersensitivity reaction of the immune system (immune complex disease) to a foreign, non-human protein, which is applied, for example, in vaccine sera or serum therapy. In addition, various drugs, such as sulfonamides and penicillins and other antigens can cause serum sickness
Drugs
- ACE inhibitors (benazepril, captopril, cilazapril, enalapril, fosinopril, lisinopril, moexipril, peridopril, quinapril, ramipril, spirapril).
- Acetylsalicylic acid (ASA)
- Anesthetics
- Anthelmintics (praziquantel)
- Antibiotics such as penicillin
- Antivertiginosa (betahistine)
- Chelating agents (deferoxamine, deferasirox).
- Histamine liberators (e.g., X-ray contrast agents, muscle relaxants).
- Mucolytics (acetylcysteine (ACC); N-acetylcysteine (NAC); N-acetyl-L-cysteine).
- Monoclonal antibodies (nataliztumab).
- Muscle relaxants, unspecified
- Opiates or opioids (alfentanil, apomorphine, buprenorphine, codeine, dihydrocodeine, fentanyl, hydromorphone, loperamide, morphine, methadone, nalbuphine, naloxone, naltrexone, oxycodone, pentazocine, pethidine, piritramide, remifentanil, sufentanil, tapentadol, tilidine, tramadol).
Other differential diagnoses
