USMLE step 1 Rash dx

Rash begins at head and moves down; postauricular lmphadenopathy. pda

Rash begins at head and moves down. Rash is preceded by cough, coryza, conjunctivitis, and blue-white spots on the buccal mucosa, blue centers on errythemous rash, he pathognomonic sign is the bright red and centrally white lesions on the buccal mucosa, which are called Koplik spots. Koplik spots are typically associated with the prodrome that precedes the development of the rash. The typical rash then begins below the ears and then spreads to include the trunk and extremities worsens to panencepholitis

parotitis, meningitis, orchitis or oophoritis in young adult. No rash

Rash begins on trunk and spreads to face and extremities with lesions of different age

Macular rash over the body that appears after several days of high fever. Usually in infants,

Rash on face that later appears over the body with a \"lace-like\" pattern

Erythematous, sandpaper-like rash with fever and sore throat, starts from trunk n spreads

Vesicular rash on palms and soles; ulcers in oral mucosa, grey white herpatiform

annular circle lesions postiove koh stain with erythemus lesion and scaly border fungal infection txt with azoles, microspuingin or tricphyton purtic

ai disorder with silver white plauqes called auspitz sign when scraped off

yellow crusty lesions, umbilicated from strep pyogenous or s aures differentiate with a catalse test

no annular rings, hot weather n tanning, less puritic, furfur, s&meatballs histology

sunburn rash in trunk scaly palms, hypotension, red tongue ( straw tongue think scarlet fever, kawasaki and tsst-1) bright papilla and increased pulse hypotension-s aures or pyo

rose spots on abdomen, fever, headache, diarrhea

bulls eye rash then bells plasy, cardiac manifestations, neurological symptoms and rhuemtoid arthritis like doxy n ceft from burgdof , can also seen with ercgilosis, erythmea migrans

palms soles and ankles spread centripdially, blanching maculopapular lesions and progresses to petechial or purpuric txt doxy, twrds trunk, obligate intracellular

herald pathc aka christmkas tree aka on back and folds and salmon crusted spots in spring n fall

Sarcoptes scabei, is transmitted by direct contact with another person who is infested with the mites. The disease is most common in crowded conditions, such as dormitories, army barracks, day care, etc. Typically, patients will present with severe pruritus, often of the hands, feet, axillae, or groin. In particular, scabies will initially affect the webs of the fingers