Internal medicine on Instagram: “Sclerodactyly: Thickening and induration of the skin over the fingers and wrists is characteristic of scleroderma.”

- “Psoriatic nails Showing onycholysis and discoloration, with typical pitting and ridging.”

- Useful chart explaining glands and hormones!

- “Steinberg thumb sign in a patient with Marfan syndrome. A positive test, such as this, consists of the distal phalanx of the thumb protruding beyond the…”

- “Skin lesions in Henoch-Schönlein purpura (IgA vasculitis) Clusters of palpable, pruritic lesions on the thigh of a patient with Henoch-Schönlein purpura…”

- “The wrist sign in a patient with Marfan syndrome. In a positive test, the first phalanges of the thumb and fifth digit substantially overlap when wrapped…”

- “Janeway lesions are macular, erythematous, nontender microabscesses in the dermis of the palms and soles caused by septic emboli that are considered…”

- “Terry nails Patients with cirrhosis may have a finding known as Terry nails. In patients with Terry nails, the proximal two-thirds of the nail plate…”