Table 4.
Study (year) | N = Elderly CU/ Total | Treatment | Duration of treatment | Treatment response | Follow-up after treatment and outcome | Side-effects after treatment | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
AH1 | Corticosteroids | LTRA | Omalizumab | Immunosuppressant | Others | |||||||||
fgAH1 | sgAH1 | Unspecified AH1 | Systemic | Topical | ||||||||||
Prospective Cohort Studies | ||||||||||||||
Leznoff et al (1983)67 | N = 1 of 17 | NA | NA | NA | NA | NA | NA | NA | NA | - Levothyroxine (dose: 0.2 mg/d) for euthyroid patient who had autoimmune thyroiditis | NA | Partial improvement | NA | NA |
Rumbyrt et al (1995)88 | N = 1 of 7 | NA | NA | NA | Previous use of - Prednisolone (dose: NA) with no improvement | NA | NA | NA | NA | Previous use of - Famotidine (dose: NA) with no improvement - Doxepin (dose: NA) with no improvement -Thyroxine (0.05 mg/d) for euthyroid patient who had autoimmune thyroiditis |
At least 4 weeks | Complete control then discontinued thyroxine | Longer than 1 year of rare hive, with use of Hydroxyzine (dose: NA, as needed) | NA |
O’Donnell et al (1998)54 | N = 1 of 10 | NA | - Cetirizine (dose: 10 mg twice daily) | Previous use of 0 (dose: NA) with no improvement | NA | NA | NA | NA | No | - IVIG (dose: 0.4 g/kg/d for 5 days) | 5 days | Partial improvement | 6 months | Headache |
Sanada et al (2005)242 | N = 5 of 25 | NA | Previous use of - Ebastine (dose: 20 mg/d) with no improvement - Ebastine (dose: 20 mg/d) |
NA | NA | NA | - All cases: Montelukast (dose: 10 mg/d) | NA | NA | NA | NA | Complete control | NA | NA |
NA | Previous use of - Ebastine (dose: 20 mg/d) with no improvement - Ebastine (dose: 20 mg/d) |
Previous use of - Betamethasone (dose: 0.5 mg/d orally) with no improvement |
Marked improvement | |||||||||||
Previous use of - Hydroxyzine (dose: 50 mg/d) with no improvement |
Previous use of - Homochlorcyclizine (dose: 30 mg/d) with no improvement - Homochlorcyclizine (dose: 30 mg/d) |
NA | No improvement | |||||||||||
NA | Previous use of - Olopatadine (dose: 20 mg/d) with no improvement - Olopatadine (dose: 20 mg/d) |
Previous use of - Betamethasone (dose: 0.5 mg/d orally) with no improvement |
No improvement | |||||||||||
NA | Previous use of - Loratadine (dose: 10 mg/d) - Ebastine (dose: 10 mg/d) with no improvement - Loratadine (dose: 10 mg/d) - Ebastine (dose: 10 mg/d) |
NA | No improvement | |||||||||||
Kaplan et al a (2008)50 | N = 2 of 12 | - Hydroxyzine (dose: 25–50 mg every 6 hours as needed, total 100–175 mg/d) | NA | NA | NA | NA | NA | - All cases: Omalizumab 150 mg sc every 2 weeks or every 4 weeks | No | NA | 4 months | No improvement | NA | NA |
- Hydroxyzine (dose: 25–50 mg every 6 hours as needed, total 175 mg/d in the first 4 week then tapered dose until stop at week 8) | Complete control | |||||||||||||
Uysal et al (2014)61 | N = 3 of 27 | NA | All cases: - Desloratadine or fexofenadine; (dose: recommended dose for 3–4 times) |
NA | NA | NA | NA | - Omalizumab 150 mg sc every 2 weeks then extend to 5 weeks | Previous use of - MTX (dose: NA) with no improvement |
NA | 112 days | Complete control then discontinued omalizumab | NA | NA |
- Omalizumab 150 mg sc every 2 weeks then extend to 7 weeks | Previous use of - AZA (dose: NA) with no improvement |
78 days | ||||||||||||
- Omalizumab 150 mg sc every 2 weeks then extend to 7 weeks | Previous use of - AZA (dose: NA) with no improvement |
62 days | ||||||||||||
Retrospective cohort studies | ||||||||||||||
McGirt et al (2006)94 | N = 2 of 19 | Previous use of - Hydroxyzine (dose: maximum 25 mg nightly) with no improvement |
Previous use of - Cetirizine (dose: maximum 10 mg/d) with no improvement |
NA | Previous use of - Prednisolone (dose: 10 mg/d for 3 days; 2–3 times) with no improvement - Prednisolone (dose: 10 mg/d once for 5 months) |
NA | NA | NA | NA | - Sulfasalazine (dose: start at 500 mg/d then increased by 500 mg each week until 2 g/d) for total 12 months | 12 months | Complete control then tapered off of sulfasalazine, sgAH1 | 3 months | NA |
NA | Previous use of - Cetirizine (dose: 10 mg/d) with no improvement |
Previous use of - Prednisolone dose pack (dose: NA) for 5 courses with no improvement |
- Sulfasalazine (dose: start at 500 mg/d then increased by 500 mg each week until 2 g/d) for total 11 months | 11 months | Complete control then discontinued sulfasalazine | NA | ||||||||
Perez et al (2010)241 | N = 1 of 16 | NA | Previous use of - sgAH1 (unmentioned name, dose: above the recommended dose) with no improvement |
NA | Previous use of - Prednisolone (dose: 20 mg/d) with no improvement | NA | NA | NA | Previous use of - CsA (dose: NA) with no improvement - MTX (dose: 5 mg weekly) |
Previous use of 0 (unmentioned name, dose: NA) with no improvement - Folic acid (dose: 5 mg weekly) |
NA | Marked improvement | NA | NA |
Mitzel-Kaoukhov et al (2010)53 | N = 2 of 6 | NA | Previous use of - sgAH1 (unmentioned name, dose: 4-fold of the recommended dose) with no improvement |
NA | NA | NA | All cases: previous use of - LTRA (unmentioned name, dose: NA) with no improvement |
NA | All cases: previous use of - CsA (dose: NA) with no improvement |
Previous use of - Histaglobin (dose: NA) with no improvement - IVIG (dose: 2 mg/kg every 4 weeks) for 11 cycles |
10 months | Complete control then discontinued | 14 months | No |
Previous use of - sgAH1 (unmentioned name, dose: 8-fold of the recommended dose) with no improvement |
Previous use of - Systemic corticosteroid (unmentioned name, dose: high dose) with no improvement |
NA | Previous use of - Dapsone (dose: NA) with no improvement - IVIG (dose: 2 mg/kg every 4 weeks) for 4 cycles then remission but 4 months later |
11 months | Complete control then discontinued | 2 months then relapse occurred so IVIG was reinitiated for other 5 cycles | Impairment of pre-existing HT, disappeared after extending the treatment period of IVIG from 2 to 3 days | |||||||
Sagi et al (2011)83 | N = 5 of 8 | All cases: previous use of - fgAH1 (unmentioned name, high dose) with no improvement |
All cases: previous use of - sgAH1 (unmentioned name, high dose) with no improvement |
NA | Previous use of - Systemic corticosteroid (unmentioned name, dose: NA) with no improvement - Systemic corticosteroid (dose: 30–40 mg/d) for multiple courses then tapered down (dose: NA) - Systemic corticosteroid (dose: 30–40 mg/d) for multiple courses then tapered down (dose: NA) - Systemic corticosteroid (dose: 30–40 mg/d) for multiple courses then tapered down until off |
NA | NA | NA | - MTX (dose: 15 mg weekly) for 1 month then tapering down to 10 and 5 mg oral weekly for 1 and 1 month, respectively) | - Folic acid (dose: 5 mg weekly) | 3 months | Complete control then discontinued MTX and folic acid | 8 months | No |
- MTX (dose: 15 mg weekly) for 3 months then currently in the process of tapering down to 10 mg oral weekly for 2 months, without recurrence of urticaria) | 5 months | Complete control (still in the MTX tapering process) | NA | Elevated liver enzyme (Twice the normal values) – resolved after reducing MTX dosage | ||||||||||
- MTX (dose: 15 mg oral weekly) for 3 months | 3 months | Complete control then discontinued MTX and folic acid | 2 months | No | ||||||||||
- MTX (dose: 7.5 mg oral weekly) for 2 months | 2 months | No improvement then discontinued MTX and folic acid due to poor compliance | 2 months | Fatigue | ||||||||||
- MTX (dose: 15 mg oral weekly) for 1 month then change to 15 mg IM weekly for 4 months | 5 months | Complete control then tapering MTX down but relapse occurred and required a constant dose of MTX 15 mg/week | NA | Gastrointestinal discomfort – resolved after changing to MTX IM route | ||||||||||
Magen et al (2013)20 | N = 49 of 92 | - fgAH1 (unmentioned name; dose: NA) in 8 of 46 patients |
- sgAH1 (unmentioned name; dose: NA) in 49 of 49 patients |
NA | - Systemic corticosteroid (unmentioned name, dose: NA) in 2 of 49 patients | NA | NA | NA | NA | NA | 12 months | Complete control in 34 of 46 patients | NA | NA |
Magen et al (2013)63 | N = 1 of 9 | NA | NA | NA | NA | NA | NA | NA | NA | - Amoxicillin (dose: 2 g/d) - Clarithromycin (dose: 1 g/d) - Omeprazole (dose: 40 mg/d) for treatment of H. pylori infection |
2 weeks | Complete control then discontinued H. pylori infection treatment | NA | NA |
Song et al (2013)55 | N = 4 of 16 | NA | All cases: previous use of - Cetirizine (dose: 60–80 mg/d) with no improvement |
NA | Previous use of - Prednisolone (dose: 15 mg/d) for 10 courses with no improvement - Prednisolone (dose: NA) for short courses Previous use of - Prednisolone (dose: 10 mg/d) for >20 courses with no improvement - Prednisolone (dose: NA) Previous use of - Prednisolone (dose: 5–20 mg/d) for >20 courses with no improvement - Prednisolone (dose: NA) tapered dose then off shortly after start omalizumab Previous use of - Prednisolone (dose: 5–10 mg/d) for >20 courses with no improvement - Prednisolone (dose: NA) tapered dose then off shortly after start omalizumab |
NA | NA | All cases: - Omalizumab 150 mg sc every 4 weeks |
NA | NA | 24 months | Complete control and continued with omalizumab 150 mg sc every 4–8 weeks | NA | No |
2 months | No improvement then discontinued omalizumab and went into spontaneous remission then discontinued prednisolone |
Flare of urticaria after first dose of omalizumab injection | ||||||||||||
2 months | No improvement then discontinued omalizumab | No | ||||||||||||
24 months | Complete control and continued with omalizumab 150 mg sc every 4–8 weeks | No | ||||||||||||
Romano et al (2015)62 | N= 1 of 9 | Previous use of - Cinnarizine (dose: NA) with no improvement |
NA | Previous use of -AH1 (unmentioned name, dose: NA) with no improvement |
Previous use of - Systemic steroid (unmentioned name, dose: NA) with no improvement |
NA | Previous use of - LTRA (unmentioned name, dose: NA) with no improvement |
- Omalizumab 150 mg sc every 4 weeks | Previous use of - CsA (dose: NA) with no improvement |
NA | 5 months | No improvement then discontinued omalizumab | 42 months | Pain at injected site |
Sugiyama et al (2015)73 | N = 2 of 40 | NA | Previous use of - Olopatadine (dose: 5 mg/d) with partial improvement - Olopatadine (dose: 5 mg/d) NA |
NA | NA | NA | NA | NA | NA | All cases: - Triiodothyronine (dose: 25 g/d) for Hashimoto’s disease |
3 months | Complete control then discontinued triiodothyronine | >10 months of complete control then recurrence occurred after triggered by upper respiratory tract infection; symptom was well-controlled with olopatadine 2.5 mg/d | NA |
NA | ||||||||||||||
Kulthanan et al (2017)57 | N = 1 of 13 | NA | Previous use of - Desloratadine (dose: 20 mg/d) - Levocetirizine (10 mg/d) with no improvement - Desloratadine (dose: 5–10 mg/d) |
NA | Previous use of - Prednisolone (5–10 mg/d) with no improvement |
NA | Previous use of - Montelukast (dose: NA) with no improvement |
- Omalizumab 150 mg sc every 4 weeks | Previous use of - CsA (dose: NA) - HCQ (dose: NA) with no improvement |
Previous use of 0 (unmentioned name, dose: NA) with no improvement |
4 months | Complete control then discontinued omalizumab | NA | No |
Napolitano et al (2018)93 | N = 1 of 1,493 | NA | NA | Previous use of 0 (dose: 4 times of licensed dose) with no improvement |
Previous use of - Prednisolone (dose: NA) with partial improvement |
NA | NA | NA | NA | - Chemotherapy for small cell lung cancer | NA | Complete control | NA | NA |
Napolitano et al (2021)45 | N = 26 of 451 | NA | - sgAH1 (unmentioned name, recommended dose) in 23 of 26 patients - sgAH1 (unmentioned name, double dose) in 3 of 26 patients with SD |
NA | NA | NA | NA | NA | NA | NA | NA | Complete control in 26 of 26 patients | NA | No |
Martina et al (2021)90 | N = 62 of 62 | NA | NA | NA | NA | NA | NA | - Omalizumab 300 mg sc every 4 weeks | NA | NA | 3 months | - Complete control in 44 of 62 patients - Partial improvement in 11 of 62 patients - No improvement in 7 of 62 patients |
NA | asthenia; spontaneously resolved within 48 hours (2 patients) |
Case Series | ||||||||||||||
Manganoni et al (2007)89 | N = 1 of 4 | Previous use of - Oxatomide (dose: 60 mg/d) with no improvement |
NA | NA | Previous use of - Betamethasone (dose: 2 mg/d orally) with no improvement |
NA | NA | NA | NA | - Surgery: total thyroidectomy for papillary thyroid carcinoma | NA | Complete control | 60 months | NA |
Godse (2011)48 | N = 1 of 5 | NA | Previous use of - sgAH1 (unmentioned name, dose: 4 times of recommended dose) with no improvement |
NA | Previous use of - Systemic corticosteroid (dose: NA) with no improvement |
NA | NA | - Omalizumab 300 mg sc every 4 weeks | NA | NA | 4 months | Complete control then discontinued omalizumab | NA | NA |
Groffik et al (2011)49 | N = 1 of 9 | NA | Previous use of - sgAH1 (unmentioned name, dose: 4 times of recommended dose) with no improvement |
NA | Previous use of - Systemic corticosteroid (dose: NA) for long-term with no improvement |
NA | NA | - Omalizumab 300 mg sc every 2 weeks | NA | NA | 2 months | Complete control then discontinued omalizumab | NA | NA |
Metz et al (2011)52 | N = 1 of 7 | NA | Previous use of - Loratadine (recommended dose) - Cetirizine (recommended dose) - Desloratadine (2–6 fold of recommended dose) - Ebastine (recommended dose) - Rupatadine (2–6 fold of recommended dose) - Levocetirizine (recommended dose) with no improvement |
NA | NA | NA | Previous use of - Montelukast (dose: NA) |
- Omalizumab 300 mg sc every 2 weeks | NA | Previous use of - Ranitidine (dose: NA) - Antibiotics (unmentioned name, dose: NA) with no improvement |
3 months | No improvement then discontinued omalizumab | NA | NA |
Kirkpatrick et al (2012)51 | N = 1 of 6 | NA | NA | Previous use of 0 (dose: NA) with no improvement |
Previous use of - Systemic corticosteroid (unmentioned name, dose: NA) with no improvement |
NA | NA | NA | No | - Levothyroxine (dose: 150 g/d) for hypothyroidism due to post I131 for Grave’s disease | 1 month | Complete control, then continue levothyroxine same dose | 24 months. After that, levothyroxine was tapered to 125 g/d but relapsed occurred within 3 weeks, so dose was increased to 150 g/d again; complete control | NA |
Ivyanskiy et al (2012)76 | N = 3 of 19 | NA | NA | All cases: previous use of 0 (dose: NA) with no improvement |
NA | NA | NA | All cases: - Omalizumab 150 mg sc every 2 weeks |
No Previous use of - CsA (dose: NA) with no improvement Previous use of - CsA (dose: NA) - AZA (dose: NA) - MMF (dose: NA) with no improvement in all treatment |
No Previous use of - TNF-α inhibitor (dose: NA) with no improvement Previous use of - TNF-α inhibitor (dose: NA) with no improvement |
6 months | Complete control then discontinued omalizumab | NA | No |
9 months | Complete control then discontinued omalizumab | |||||||||||||
4 months | Partial improvement then discontinued omalizumab | |||||||||||||
Armengot-Carbo et al (2013)81 | N = 5 of 15 | NA | NA | Previous use of 0 (dose: NA) with no improvement |
Previous use of - Systemic corticosteroid (unmentioned name, dose: NA) with no improvement NA Previous use of - Systemic corticosteroid (unmentioned name, dose: NA) with no improvement NA Previous use of - Systemic corticosteroid (unmentioned name, dose: NA) with no improvement |
NA | NA | - Omalizumab 150 mg sc every 4 weeks for 3 months then 300 mg sc every 4 weeks for other 3 months | Previous use of - CsA (dose: NA) with no improvement |
Previous use of -AH2 (unmentioned name, dose: NA) with no improvement Previous use of -AH2 (unmentioned name, dose: NA) with no improvement Previous use of -AH2 (unmentioned name, dose: NA) with no improvement NA Previous use of -AH2 (unmentioned name, dose: NA) with no improvement |
6 months | Partial improvement |
NA | Nausea |
- Omalizumab 150 mg sc every 4 weeks for 3 months | 3 months | No improvement then discontinued omalizumab | Nausea | |||||||||||
- Omalizumab 150 mg sc every 2 weeks for 3 months then 150 mg sc every 4 weeks for other 3 months | 6 months | Complete control | No | |||||||||||
- Omalizumab 300 mg sc every 4 weeks for 6 months | 6 months | Complete control | No | |||||||||||
- Omalizumab 150 mg sc every 4 weeks for 3 months | 3 months | No improvement then discontinued omalizumab | No | |||||||||||
Zubrinich et al (2019)92 |
N = 1 of 4 |
NA | NA | Previous use of - unspecified AH1 (dose: NA) with partial improvement |
Previous use of - Prednisolone (dose: NA) with partial improvement |
NA | NA | NA | NA | - Ivermectin (dose: NA) for treatment of Strongyloides infection | NA | Complete control | 10 months | NA |
Case reports | ||||||||||||||
Urbach (1942)97 | N = 1 of 1 | NA | NA | NA | NA | NA | NA | NA | NA | - Surgery: neoplasm removal for rectal carcinoma | NA | Complete control | NA | NA |
Anderson et al (1991)95 | N = 1 of 1 | Previous use of - Hydroxyzine (dose: NA) with no improvement |
- Terfenadine (dose: NA) | NA | Previous use of - Systemic corticosteroid (unmentioned name, dose: NA) for short course with no improvement |
Previous use of - Hydrocortisone cream (dose: NA) with no improvement |
NA | NA | NA | - Surgery: neoplasm removal for colon carcinoma | NA | Complete control | 60 months | NA |
Amoroso et al (1997)69 | N = 1 of 1 | NA | NA | NA | Previous use of - Betamethasone (dose: 4 mg IV) - Betamethasone (dose: 0.5 mg/d orally) with no improvement |
NA | NA | NA | NA | - Surgery: total thyroidectomy for Hashimoto’s thyroiditis | NA | Complete control | 18 months | NA |
Zhang et al (2004)79 | N = 1 of 1 | Previous use of - Chlorpheniramine (dose: 12 mg/d) with no improvement |
NA | NA | - Prednisolone (dose: 10 mg/d) for 3 months and 1 week | NA | NA | NA | - Melphalan (dose: 2 mg) for 1 week followed by - Cyclophosphamide (dose: 50 mg/d) for 3 months for IgA Myeloma |
NA | 3.25 months | Complete control then discontinued prednisolone, melphalan, and cyclophosphamide | NA, symptom relapsed when myeloma relapsed | NA |
Wong et al (2010)56 | N = 1 of 1 | Previous use of - Diphenhydramine (dose: 50 mg once) with complete control |
- Cetirizine (dose: 10 mg/d) for prophylaxis | NA | NA | NA | NA | NA | NA | - Epinephrine auto-injector (dose: NA) | 24 months | Marked improvement but 2 months later she acquired another hymenoptera sting, and within 2 weeks developed systemic urticaria when exposing to cold temperature | NA | NA |
Baroni et al (2012)85 | N = 1 of 1 | NA | NA | Previous use of 0 (dose: NA) with no improvement |
Previous use of - Systemic corticosteroid (unmentioned name, dose: NA) with no improvement |
Previous use of - Topical corticosteroid (unmentioned name, dose: NA) with no improvement |
NA | NA | NA | - Surgery: radical prostatectomy for prostate adenocarcinoma | NA | Complete control | 24 months | NA |
Hui-Hui et al (2012)84 | N = 1 of 1 | NA | Previous use of - Loratadine (dose: NA, taken once every other day) for 4 months with partial improvement |
NA | NA | NA | NA | NA | NA | - Surgery: right middle lobectomy for lung cancer removal | NA | Complete control | 6 months | NA |
Zimmer et al (2016)82 | N = 1 of 1 | NA | NA | Previous use of -AH1 (unmentioned name, dose: up to 4 times of licensed dose) with no improvement |
NA | NA | NA | - Omalizumab 300 mg sc every 4 weeks | NA | NA | 4 months | Marked improvement then discontinued omalizumab | 5 months, then relapse occurred | No |
Sussman et al (2016)60 | N = 1 of 1 | Previous use of - Hydroxyzine (dose: 25–200 mg/d) - Diphen-hydramine (dose: 25–200 mg/d) - Doxepin (dose: 25–125 mg/d) with no improvement in all treatment but caused sedation |
Previous use of - Cetirizine (dose: 10–40 mg/d) - Loratadine (dose: 10 mg/d) with no improvement in all treatment - Cetirizine (dose: 20 mg/d) |
Previous use of 0 (dose: NA dosage as needed) with no improvement |
Previous use of - Prednisolone (dose: 5–40 mg/d) with no improvement - Prednisolone (dose: tapering doses from before study until discontinued) |
NA | Previous use of - Montelukast (dose: 10 mg/d) with no improvement |
- Omalizumab 150 mg sc every 4 weeks | Previous use of - HCQ (dose: 400 mg/d) for 2 months - CsA (dose: 300 mg/d) for 2 months with no improvement in all treatment |
Previous use of - Ranitidine (dose: 300 mg/d) with no improvement - IVIG (dose: NA, discontinued due to hemolytic reaction) Both with partial improvement |
36 months | Marked improvement after 1 week then continued same dose of omalizumab but stopped taking prednisolone, resulting in low daily UAS7 scores. After 36 months, symptoms became severe, required longer courses and doses of prednisolone. Moreover, omalizumab was increased to 300 mg sc every 4 weeks to maintain low UAS7. | NA | NA |
Kasperska-Zajac et al (2016)91 | N = 1 of 1 | NA | NA | Previous use of 0 (high dose) with no improvement |
Previous use of - Prednisolone (dose: up to 15 mg) for the past 3–10 years with no improvement |
NA | NA | - Omalizumab 300 mg sc | NA | NA | NA | Complete control after 1 dose of omalizumab then continued with omalizumab 150–300 mg every 5–6 weeks | NA | No |
Aldasouqi et al (2018)96 | N = 1 of 1 | NA | NA | NA | NA | NA | NA | NA | NA | - Surgery: parathyroidectomy for primary hyperparathyroidism caused by large parathyroid adenoma | NA | Complete control | NA | NA |
Pannofino (2018)58 | N = 1 of 1 | NA | - Rupatadine (dose: 10 mg twice daily) for 20 days then continue with 10 mg/d for 6 months then discontinued | Previous use of - unspecified AH1 (dose: NA) with no improvement |
Previous use of - Oral corticosteroid (unmentioned name, dose: NA) with no improvement | NA | NA | - Omalizumab 300 mg sc every 4 weeks | NA | NA | 6 months | Complete control then discontinued omalizumab | 12 months | NA |
Notes: aIt should be noted that the study of Kaplan et al included 12 CU patients (with 2 elderly patients) to be received placebo for 4 weeks and then omalizumab for 16 weeks. Omalizumab was injected every 2 weeks or every 4 weeks, dosed according to the patient’s body weight, and serum IgE at the screening visit.
Abbreviations: AH1, H1-antihistamine; AH2, H2-antihistamine; AZA, azathioprine; CsA, cyclosporine; d, day; fgAH1, first generation antihistamine; HCQ, hydroxychloroquine; IM, intramuscular; IV, intravenous; IVIG, intravenous immunoglobulin; LTRA, Leukotriene-receptor antagonist; mg, milligram; MMF, mycophenolate mofetil; MTX, methotrexate; NA, not available/not applicable; sc, subcutaneous; SD, symptomatic dermographism; sgAH1, second generation antihistamine; TNF-α inhibitor, tumor necrosis factor-α inhibitors; UAS7, Weekly Urticarial Activity Score.