PMID- 30755855 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220331 IS - 2284-2594 (Electronic) IS - 2284-2594 (Linking) VI - 3 IP - 2 DP - 2016 TI - A Very Big Hand Is a Very Big Problem: Soft-Tissue Infection, Venous Thrombosis, or Just an Insect Sting? PG - 000312 LID - 10.12890/2016_000312 [doi] LID - 000312 AB - A 67-year-old woman developed severe edema of her right hand and forearm, for which she was treated with antibiotics, without benefit. The echography excluded a venous thrombosis. Subsequently, she referred a wasp sting before the development of the edema. Specific Hymenoptera venom immunoglobulin E (IgE) was found to be positive for paper wasp and yellow jacket. A large local reaction (LLR) was diagnosed due to the hymenoptera sting. Self-injectable epinephrine was prescribed for possible, though unlikely, systemic reactions following hymenoptera stings. LEARNING POINTS: The differential diagnosis of an upper forearm and hand oedema may be challenging.In order to reach the correct diagnosis and to prescribe proper treatment, careful examination and history taking is essential.All possible causes should be taken into proper consideration.Large local reaction (LLR) is characterized by hot, flushed and thick edema after a hymenoptera sting. As the risk of a systemic reaction, upon the first sting following a consistent index LLR, it is important to recognize an LLR in order to prescribe self-injectable epinephrine to prevent the occurrence of anaphylaxis. FAU - Damanti, Sarah AU - Damanti S AD - School of Specialization in Geriatrics and Gerontology, Universita degli Studi di Milano, Milan, Italy. FAU - Brignolo-Ottolini, Barbara AU - Brignolo-Ottolini B AD - School of Specialization in Geriatrics and Gerontology, Universita degli Studi di Milano, Milan, Italy. FAU - Mansi, Marta AU - Mansi M AD - School of Specialization in Geriatrics and Gerontology, Universita degli Studi di Milano, Milan, Italy. FAU - Marcucci, Maura AU - Marcucci M AD - Geriatric Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy. AD - Department of Clinical Sciences & Community Health, University of Milan, Milan, Italy. FAU - Mari, Daniela AU - Mari D AD - Geriatric Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy. AD - Department of Clinical Sciences & Community Health, University of Milan, Milan, Italy. FAU - Pravettoni, Valerio AU - Pravettoni V AD - Allergology and Immunology Unit, Fondazione IRCCS Ca' Granda, Osp. Maggiore Policlinico, Milan, Italy. LA - eng PT - Journal Article DEP - 20160120 PL - Italy TA - Eur J Case Rep Intern Med JT - European journal of case reports in internal medicine JID - 101648453 PMC - PMC6346946 OTO - NOTNLM OT - Large local reaction OT - anaphylaxis OT - angioedema COIS- Conflicts of Interests: The authors declare that there are no competing interests. EDAT- 2016/01/20 00:00 MHDA- 2016/01/20 00:01 PMCR- 2016/01/20 CRDT- 2019/02/14 06:00 PHST- 2015/10/14 00:00 [received] PHST- 2015/11/16 00:00 [accepted] PHST- 2019/02/14 06:00 [entrez] PHST- 2016/01/20 00:00 [pubmed] PHST- 2016/01/20 00:01 [medline] PHST- 2016/01/20 00:00 [pmc-release] AID - 312-1-2511-1-10-20160119 [pii] AID - 10.12890/2016_000312 [doi] PST - epublish SO - Eur J Case Rep Intern Med. 2016 Jan 20;3(2):000312. doi: 10.12890/2016_000312. eCollection 2016.