My mother had a similar reaction, as an allergic reaction to chigger bites elsewhere on her body. It wasn't restricted to one side of her face, but mostly centred near her lips. Has he encountered anything that might have caused an allergic reaction? It might not hurt to take benadryl just in case.
Mary, 25, happily married pro photographer, momma to 2 great danes.
Dx: Psoriatic Arthritis, Fibromyalgia, Psoriasis, Sjogren's, IBS, Hiatal Hernia, & possible Endometriosis.
Meds: Stelara, Methotrexate, Relafen, Omeprazole, Lyrica, Tizanidine, Voltaren Gel, Tramadol