27 results
Allopecia - Differential Diagnosis Framework for Hair Loss

Localized / Focal Hair Loss Pattern:
 • Scarring Alopecia:
Allopecia - Differential ... Capitis - Skin ... Examination: • Signs ... texture at bald spots ... Diagnosis #dermatology
Generalized Hyperpigmentation Differentials
Use the Mnemonic "no skin SPARED"

Images from dermnet.nz and merckmanuals

Mnemonic from https://www.medscape.com/slideshow/dermatology-mnemonics-6011359#5 #diagnosis #differential
Hyperpigmentation Differentials ... the Mnemonic "no skin ... #5 #diagnosis #differential ... #symptoms #signs ... #dermatology #skin
Maculopapular - Diagnostic Algorithm
Pathophysiology:
- Catch-all term with a wide range of potential pathophysiologic mechanisms and causative
red-flags to exclude dermatologic ... Ill-appearing, vital sign ... sulfa-drug - Skin ... #Diagnosis #Dermatology ... Targetoid #Algorithm #Differential
Hair Loss (Alopecia) - General (Diffuse and Focal) Differential Diagnosis Algorithm

DIFFUSE
Scarring - Irreversible-biopsy required
 • Lupus
Hair Loss (Alopecia ... Diffuse and Focal) Differential ... • Androgenetic alopecia ... - Secondary to Skin ... #dermatology #Differential
Psoriatic Arthritis: Pathogenesis and Clinical findings

In tendons and connective tissues:
 • Enthesitis  - Pain/tenderness over
tenderness over ligament ... are inflamed In skin ... , ridging, oil spots ... PsoriaticArthritis #pathophysiology ... #diagnosis #signs
Physiologic Skin Changes in Pregnancy - Differential Diagnosis Algorithm

Face
 • Melasma
Abdomen
 • Linea Nigra 
Hormone induced
Physiologic Skin ... in Pregnancy - Differential ... Campbell de Morgan spot ... • Chadwick's sign ... #dermatology #Differential
Erythroderma - Diagnostic Algorithm. Pathophysiology: 1) Extensive cutaneous capillary dilation, results in widespread exfoliation of the
Pathophysiology: ... of germinative skin ... Basophils/Histamine 4) Skin-homing ... #Diagnosis #Dermatology ... Nikolsky #Algorithm #Differential
Lupus (SLE): Mucocutaneous Manifestations

 • Langerhan cells and keratinocytes release cytokines -> localized inflammatory response ->
areas -> Scaring alopecia ... inflammation on skin ... mechanism) -> Alopecia ... Manifestations #pathophysiology ... #diagnosis #signs
Pathyophysiology - hyperglycemic crises in patients with diabetes 
Key signs/symptoms of HHS/DKA:
Both: Polyuria, polydipsia, weight loss,
Pathyophysiology ... diabetes Key signs ... hypovolemia (dry MM, skin ... hypotension) DKA: Short
Rheumatoid arthritis (RA): Extra-articular manifestations
Skin: 
 • Inflammation of skin (esp. over areas of stress) forms
manifestations Skin ... Inflammation of skin ... hair follicles -> Alopecia ... RheumatoidArthritis #RA #pathophysiology ... #signs #symptoms