# The Grenz Zone A podcast by Logan Kolb, DO; Karthik Krishnamurthy, DO. Logan Kolb, DO, a practicing dermatologist, breaks down common skin rashes and lesions in a simple, fun, and engaging fashion to build a strong foundation of dermatology knowledge for dermatology providers. Feed: https://grenzzonederm.com/feed/podcast/ ## Latest episodes - [Ep45 – MISC – Hypopigmented Lesions](https://invisiblenetwork.ai/podcast/1464405265/a24abd81abfd) (2024-07-30, 28 min): audio https://episodes.castos.com/learndermpodcast/1795032/c1e-nnoks52j2miqvojn-gp2j3mxkhwow-650q9v.mp3 - [Ep44 – DERMAL – Histiocytic – Sarcoidosis](https://invisiblenetwork.ai/podcast/1464405265/3c9cc65a2006) (2024-06-27, 28 min): audio https://episodes.castos.com/learndermpodcast/1772602/c1e-g3w7f3n300b057w8-7nq50p5ku8x9-rjfcjk.mp3 - [Ep43 – DERMAL – Histiocytic – Granuloma Annulare](https://invisiblenetwork.ai/podcast/1464405265/d310438fc895) (2024-03-25, 23 min): audio https://episodes.castos.com/learndermpodcast/1702354/c1e-4kd3c4005xs8r9zj-v088wnpghqnn-uavtur.mp3 - [Ep42 – DERMAL – Depositional disorders](https://invisiblenetwork.ai/podcast/1464405265/3e16f34ba84b) (2023-12-19, 29 min): audio https://episodes.castos.com/learndermpodcast/71bbfe31-9d9c-4181-a030-fb344bf94a3a-gz-ep.-44-.-Depositional-Derm-mix3-.mp3 - [Ep41 – MISC – Biologics with Dr. K Part III – Rx sent, now what? – prior auth, staffing](https://invisiblenetwork.ai/podcast/1464405265/b732c30e86da) (2021-10-27, 27 min): audio https://episodes.castos.com/learndermpodcast/gz.-ep-41.-Dr-K-interview.-pt3.-mix2-.mp3 - [Ep40 – MISC – Biologics with Dr. K Part II – Choosing your biologic](https://invisiblenetwork.ai/podcast/1464405265/4cee112bb288) (2021-10-13, 25 min): audio https://episodes.castos.com/learndermpodcast/gz.-ep-40.-Dr.-K-interview-pt-2-mix2-.mp3 - [Ep39 – MISC – Biologics with Dr. K Part I – Obj/Subj criteria, Patient buy-in](https://invisiblenetwork.ai/podcast/1464405265/0c828fd34ea9) (2021-09-28, 26 min): audio https://episodes.castos.com/learndermpodcast/gz.-ep-39.-Biologic-pt1.-mix2-.mp3 - [Ep38 – MISC – Bumps in a Baby](https://invisiblenetwork.ai/podcast/1464405265/707e24813e0f) (2021-09-01, 26 min): audio https://episodes.castos.com/learndermpodcast/gz.-ep-38.-Bumps-in-a-Baby-mix-2-.mp3 - [Ep37 – MISC – Hyperhidrosis](https://invisiblenetwork.ai/podcast/1464405265/7b332953ceb0) (2021-08-18, 30 min): audio https://episodes.castos.com/learndermpodcast/bbf7c421-5dd2-442b-92ec-a4faff6e669c-gz.-ep-37.-Hyperhidrosis-mix-4-fixed-intro-.mp3 - [Ep36 – MISC – HS Part III – Management pearls with Dr. Joslyn Kirby, MD](https://invisiblenetwork.ai/podcast/1464405265/39d170a0fb6d) (2021-07-28, 36 min): audio https://episodes.castos.com/learndermpodcast/gz.-ep-36.-Dr.-Kirby-interview-part-3-mix-3-.mp3 - [Ep35 – MISC – HS Part II – Pathogenesis, Comorbidities, & Treatment](https://invisiblenetwork.ai/podcast/1464405265/190fdfe2a398) (2021-07-14, 30 min): audio https://episodes.castos.com/learndermpodcast/gz.-ep-35.-Hyrdadenitis-Suppurativa-part-2-mix4-with-2021-copyright-1-.mp3 - [Ep34 – MISC – Hidradenitis Suppurativa (HS) I – The Patient Experience With Dr. Katelyn Baker](https://invisiblenetwork.ai/podcast/1464405265/9c94e56b1505) (2021-07-01, 23 min): audio https://episodes.castos.com/learndermpodcast/gz.-ep-34.-HS-part-1-mix-3.-2021-CR-.mp3 - [The Grenz Zone Trailer](https://invisiblenetwork.ai/podcast/1464405265/162a9deb2487) (2021-01-11, 2 min): audio https://episodes.castos.com/learndermpodcast/GZ-trailer.mp3 - [Ep33 VASC – Vascular growths](https://invisiblenetwork.ai/podcast/1464405265/bf4dccd4de0d) (2020-12-29, 36 min): audio https://episodes.castos.com/learndermpodcast/ep-33.-gz.-vascular-lesions-mix3-.mp3 - [Ep32 VASC – Purpuric Rash case](https://invisiblenetwork.ai/podcast/1464405265/53088f6b3c90) (2020-11-24, 31 min): audio https://episodes.castos.com/learndermpodcast/ep-32.-gz.-Purpuric-Rash-Case-mix3-.mp3 - [Ep31 VASC – Retiform purpura](https://invisiblenetwork.ai/podcast/1464405265/d96bd16f3237) (2020-10-26, 22 min): audio https://episodes.castos.com/learndermpodcast/ep-31.-gz.-VASCULAR-Retiform-Purpura-mix3-.mp3 - [Ep30 VASC – Vasculopathy](https://invisiblenetwork.ai/podcast/1464405265/aa750e7268e3) (2020-09-22, 32 min): audio https://episodes.castos.com/learndermpodcast/ep-30.-gz.-VASCULAR-Vasculopathy-1.mp3 - [Ep29 VASC – Vasculitis II](https://invisiblenetwork.ai/podcast/1464405265/6e309481f12f) (2020-07-28, 31 min): audio https://episodes.castos.com/learndermpodcast/ep-29.-gz.-VASCULAR-Vasculitis-2.mp3 - [Ep28 VASC – Vasculitis I](https://invisiblenetwork.ai/podcast/1464405265/3fa17c1b4620) (2020-06-23, 40 min): audio https://episodes.castos.com/learndermpodcast/ep-28.-gz.-VASCULAR-Vasculitis-1.mp3 - [Ep27 VASC – Urticaria](https://invisiblenetwork.ai/podcast/1464405265/1c5c7bf41b46) (2020-05-12, 36 min): audio https://episodes.castos.com/learndermpodcast/ep-27.-gz.-Urticaria.mp3 - [Ep26 VASC – Figurate (Gyrate) Erythemas (EAC, EGR, Erythema migrans, Erythema marginatum)](https://invisiblenetwork.ai/podcast/1464405265/5bb479595a41) (2020-04-07, 24 min): audio https://episodes.castos.com/learndermpodcast/ep-26.-gz.-Figurate-Erythema.mp3 - [Ep25 – COVID-19 and Dermatology – with Dr. Karthik Krishnamurthy, DO and Dr. Grumpypants](https://invisiblenetwork.ai/podcast/1464405265/fa6ab41b01b2) (2020-03-23, 28 min): audio https://episodes.castos.com/learndermpodcast/ep-25.-gz.-Covid-19.mp3 - [Ep24 VASC – Toxin-mediated rashes (SSSS, TSS, Kawasaki DZ, Scarlet Fever)](https://invisiblenetwork.ai/podcast/1464405265/2121cbbd3749) (2020-03-10, 28 min): audio https://episodes.castos.com/learndermpodcast/06251d45-9387-48b4-b835-f9b294e9f17f-Ep24-VASC-Toxin-mediated-rashes-SSSS-TSS-Kawasaki-DZ-Scarlet-Fever-.mp3 - [Ep23 VASC – Viral Exanthems](https://invisiblenetwork.ai/podcast/1464405265/2871876bd4b2) (2020-02-26, 29 min): audio https://episodes.castos.com/learndermpodcast/ep-23.-gz.-original-logic.mp3 - [Ep22 VASC – SJS/TEN](https://invisiblenetwork.ai/podcast/1464405265/62eea6a5ea05) (2020-02-13, 37 min): audio https://episodes.castos.com/learndermpodcast/ep-22.-gz.mp3 - [Ep21 VASC (Vascular) – Erythema multiforme](https://invisiblenetwork.ai/podcast/1464405265/9723d74d0705) (2020-01-28, 23 min): audio https://episodes.castos.com/learndermpodcast/ep-21.-gz.mp3 - [Ep20 MISC – Diaper Dermatitis](https://invisiblenetwork.ai/podcast/1464405265/34eb00a99c92) (2020-01-14, 28 min): audio https://episodes.castos.com/learndermpodcast/ep-20.-gz.mp3 - [Ep19 MISC – Acne 2](https://invisiblenetwork.ai/podcast/1464405265/7a4387198244) (2020-01-06, 25 min): audio https://episodes.castos.com/learndermpodcast/ep-19.-gz.mp3 - [Ep18 MISC – Acne 1](https://invisiblenetwork.ai/podcast/1464405265/1bc1a13a9ab8) (2019-12-18, 32 min): audio https://episodes.castos.com/learndermpodcast/ep-18.-gz.mp3 - [Ep17 MISC – AK/SCC](https://invisiblenetwork.ai/podcast/1464405265/913ba2652c7c) (2019-12-11, 27 min): audio https://episodes.castos.com/learndermpodcast/ep-17.-gz.mp3 - [Ep16 MISC (Miscellaneous) – Basal Cell Carcinoma](https://invisiblenetwork.ai/podcast/1464405265/3b7cb4b8b56c) (2019-12-05, 31 min): audio https://episodes.castos.com/learndermpodcast/ep-16.-gz.mp3 - [Ep15 ECZ – Atopic Dermatitis](https://invisiblenetwork.ai/podcast/1464405265/4920b11e3d8b) (2019-10-10, 38 min): audio https://episodes.castos.com/learndermpodcast/ep-15.-gz.mp3 - [Ep14 ECZ – Stasis Dermatitis/Red Leg Differential](https://invisiblenetwork.ai/podcast/1464405265/b81df0cbb9f7) (2019-09-26, 22 min): audio https://episodes.castos.com/learndermpodcast/ep-14.-gz.mp3 - [Ep13 ECZ (Eczematous) – Contact Dermatitis](https://invisiblenetwork.ai/podcast/1464405265/7713e004b0d4) (2019-09-12, 31 min): audio https://episodes.castos.com/learndermpodcast/ep-13.-gz.mp3 - [Ep12 PSQ – Erythroderma](https://invisiblenetwork.ai/podcast/1464405265/0ae9f1a2ab9e) (2019-08-22, 30 min): audio https://episodes.castos.com/learndermpodcast/ep-12.-gz.mp3 - [Ep11 PSQ – Annular disorders (Tinea, SCLE, EAC)](https://invisiblenetwork.ai/podcast/1464405265/ee7388f9c02d) (2019-08-16, 30 min): audio https://episodes.castos.com/learndermpodcast/ep-11.-gz.mp3 - [Ep10 PSQ – Lichen Planus](https://invisiblenetwork.ai/podcast/1464405265/51db9f41b93b) (2019-08-08, 29 min): audio https://episodes.castos.com/learndermpodcast/ep-10.-gz.mp3 - [Ep9 PSQ – Pityriasiform (PR, 2° Syph, TV)](https://invisiblenetwork.ai/podcast/1464405265/10dbf6e4fa3c) (2019-08-01, 27 min): audio https://episodes.castos.com/learndermpodcast/ep-9.-gz.mp3 - [Ep8 PSQ – Parapsoriasis/PRP](https://invisiblenetwork.ai/podcast/1464405265/5eafa6f47c44) (2019-07-25, 23 min): audio https://episodes.castos.com/learndermpodcast/ep-8.-gz.mp3 - [Ep7 PSQ – Mycosis Fungoides](https://invisiblenetwork.ai/podcast/1464405265/23bf0c06079e) (2019-07-18, 23 min): audio https://episodes.castos.com/learndermpodcast/ep-7.-gz.mp3 - [Ep6 PSQ – Seborrheic Dermatitis](https://invisiblenetwork.ai/podcast/1464405265/47ed15173574) (2019-07-11, 20 min): audio https://episodes.castos.com/learndermpodcast/ep-6.-gz.mp3 - [Ep5 PSQ – Psoriasis II](https://invisiblenetwork.ai/podcast/1464405265/515a4be9b542) (2019-06-27, 37 min): audio https://episodes.castos.com/learndermpodcast/ep-5.-gz.mp3 - [Ep4 PSQ (Papulosquamous) – Psoriasis I](https://invisiblenetwork.ai/podcast/1464405265/85044b039082) (2019-06-26, 23 min): audio https://episodes.castos.com/learndermpodcast/ep-4.-gz.mp3 - [Ep3 – Introduction to Reaction patterns – with Dr. Charles Gropper, MD](https://invisiblenetwork.ai/podcast/1464405265/22e23fb830b1) (2019-06-25, 24 min): audio https://episodes.castos.com/learndermpodcast/ep-3.-gz.mp3 - [Ep2 – The Dermatology Exam](https://invisiblenetwork.ai/podcast/1464405265/df8585ccb90e) (2019-06-25, 23 min): audio https://episodes.castos.com/learndermpodcast/017797df-7de6-4533-9a4e-d9951bfbfb4a-Ep2-The-Dermatology-Exam.mp3 - [Ep1 – Intro/Basic Anatomy of Skin, Hair, and Nails](https://invisiblenetwork.ai/podcast/1464405265/70be48a31675) (2019-06-25, 37 min): audio https://episodes.castos.com/learndermpodcast/ep-1.-gz.mp3 Shows are listed from Apple Podcasts' charts and directory, and Podcast Index where it is used. Every show and episode belongs to its publisher and plays from the publisher's own feed; this site hosts none of them.