Pompholyx https://en.wikipedia.org/wiki/Dyshidrosis
Pompholyx est genus dermatitis quod in palmis manuum et plantis pedum vesiculae pruriginis proprias producit. Pusulae fere 1‑2 mm magnitudinis sunt et durent per tres septimanas, sed saepe recurunt. Rubor plerumque non apparet. Recursus repetitus morbi in fissuris et cutis crassa manifestatur.

Allergeni, contactus corporalis vel mentis, frequentia manus lavandae, vel metallorum contactus possunt morbum provocare. Diagnosis fundatur in aspectu clinicorum signorum et symptomatum. Aliae conditiones quae symptomata similia praebent, inter quas pustulae, psora et scabies, includuntur.

Curatio plerumque cum crepito steroideo fit. Potentia alta crepiti steroidei potest requiri pro prima septimana vel duobus. Antihistamines adhiberi possunt contra pruritum.

○ Curatio OTC Medicamenta
Non utendum sapone. Cum palmae et plantae cutem crassam habent, unguentum steroideum OTC humilis potentia non sufficit. Antihistaminicum OTC etiam adiuvare potest.
#OTC steroid ointment
#OTC antihistamine

○ Curatio
#High potency steroid ointment
#Alitretinoin
Informationes plurimae ― Latine
References Dyshidrotic Eczema: A Common Cause of Palmar Dermatitis 33173645 
NIH
Dyshidrotic eczema, quae etiam eczema palmoplantar acuta nota est, commune genus dermatitis manus in adultis. Constituit circiter 5‑20 % casuum dermatitis manus. Haec conditio notatur pusulis fluide parvis in lateribus digitorum et palmarum, cum tumore in strato cutis. Aliquando hae pusulae misceri possunt ad formandas maiores, sicut botellus tapiocae. In gravibus casibus dermatitis severa totam palmam manus spargere potest. Diagnostica typice fundatur in observatione clinica, cum pusulae subito apparent in digitis et palmis expansis.
Dyshidrotic eczema (DE) or acute palmoplantar eczema is a common cause of hand dermatitis in adults. It accounts for 5-20% of the causes of DE. It is a vesiculobullous disorder of the hands and soles. It is an intraepidermal spongiosis of the thick epidermis in which accumulation of edema causes the formation of small, tense, clear, fluid-filled vesicles on the lateral aspects of the fingers that can become large and form bullae. The vesicles can have a deep-seated appearance, which is referred to as “tapioca pudding.” In severe cases, lesions can extend to the palmar area and affect the entire palmar aspect of the hand. The diagnosis is mostly clinical and suggested by a recurrent rash of acute onset with vesicles and bullae located in the fingers extending to the palmar surfaces of the hands.
 Vesico-bullous rash caused by pompholyx eczema 22665876 
NIH
Vir XXXI annorum dermatologum visitavit cum historia IV dierum valde scabiei et papularum linearum in palmae utriusque manus. Nuper contactus est cum aliquo, qui scabies habebat. Aeger historiam scabiei et asthma ab infantia habuit, sed in aetate adulta numquam expertus est. In examinatione et analysi microscopica papulae sine ullis signis nocivis, minutae, vel ovae observatae sunt. Diagnostica praeliminaris pompholyx(eczema) facta est, et aegrotus corticosteroides topicos lenes uti coepit. Sed post V dies aeger rediit cum symptomatibus gravioribus et laesionibus gravibus.
A 31-year-old man presented to dermatology with a 4 day history of an intensely itchy, linear, vesicular rash affecting the palms of both hands, on the background of recent exposure to a patient with scabies. The patient had a history of childhood eczema and asthma but no exacerbations in adulthood. Examination and microscopy revealed a vesicular rash with an absence of any burrows, mites or eggs. A provisional diagnosis of pompholyx eczema was made and the patient was commenced on mild topical corticosteroids. The patient re-presented 5 days later with worsening symptoms and a severe vesico-bullous rash