Measles , as well as Chicken, pox, Rubella, Mumps. Eczema and Psoriasis are all caused by Vaccines. An immune response in the nerves of the skin.

1. Vaccines prevent the infectious diseases they are named for, not cause them

The historical and public-health record shows steep declines in measles and mumps after widespread vaccination campaigns, with, for example, large percentage reductions in mumps incidence described following vaccine introduction and long-standing public-health recommendations to use MMR on schedule ^{[1] [6]}. Public-health authorities like the CDC explicitly state that MMR prevents serious outcomes of measles, mumps and rubella and that most vaccine recipients do not experience serious problems, while acknowledging a small, measurable risk profile for specific adverse events ^[2].

2. Vaccines can cause skin reactions, but these are generally uncommon and diverse

Dermatology reviews catalog a range of cutaneous vaccination reactions—ranging from local inflammation to erythema multiforme, autoimmune blistering, and transient flares of psoriasis in a minority of patients—documenting that dermatologic phenotypes can follow vaccination in rare cases and with variable timing (days to months) ^[3]. These sources portray cutaneous vaccine reactions as recognized clinical phenomena, not as proof that vaccination is the root cause of chronic skin diseases for the general population ^[3].

3. Epidemiology shows some associations with atopy but not broad causation of eczema or psoriasis

Several epidemiologic studies report associations between measles/MMR exposure and atopic outcomes: one cohort found increased cumulative incidence of atopic dermatitis among MMR‑vaccinated children compared with unvaccinated peers (adjusted incidence ratio ~1.86), and another reported a positive association between measles infection and atopic disorders in an MMR‑vaccinated subgroup (adjusted OR 1.77) as well as some negative associations with rubella in unvaccinated groups ^{[4] [5]}. Such associations signal possible immune‑system interactions worth study, but they are observational, sometimes heterogeneous, and do not equate to definitive proof that vaccines "cause" chronic eczema or psoriasis across populations ^{[4] [5]}.

4. Psoriasis can infrequently flare after vaccines, but guidance is nuanced

Dermatology guidance recognizes that live‑attenuated vaccines pose special considerations for patients on systemic biologic therapies for psoriasis, and case reports/series document occasional vaccine‑associated flare or guttate psoriasis in a small fraction of patients—evidence used by clinicians to individualize risk–benefit decisions rather than to indict vaccines as a universal cause of psoriasis ^{[7] [3]}. The literature frames these events as rare adverse outcomes or triggers in susceptible individuals, not as common or primary etiologies.

5. Serious neurologic and systemic adverse events are rare and have specific histories

Surveillance and reviews identify rare neurologic events temporally associated with measles/mumps vaccines in particular contexts—e.g., aseptic meningitis linked to certain mumps strains historically—prompting strain changes and surveillance rather than a conclusion that vaccines broadly produce neurologic disease in skin nerves ^{[6] [8]}. Public-health analyses emphasize benefit over rare harms and track specific signals to guide vaccine policy ^{[1] [2]}.

6. Unresolved questions, limitations and where the evidence does not speak

The supplied sources document associations, rare cutaneous adverse events and clear benefits of vaccination, but they do not provide evidence that chickenpox/varicella or chronic dermatologic diseases are "all caused by vaccines" nor do they document the specific mechanistic claim that these conditions arise from "an immune response in the nerves of the skin"; that mechanistic statement is not addressed in the available reporting and therefore cannot be confirmed or refuted here (limitation: mechanistic claim not covered) ^{[3] [4] [5] [2]}.